CHAPTER IX.

 ON POISONS, MIASMS AND CONTAGIONS¹.

 

§ 1. Although the amount of disease and mortality traceable to accidents, to the ordinary atmospheric³ changes of which the thermometer gives us due information, to the habits of life and the effects of hereditary⁴ influence, be sufficiently⁵ great, it yet seems nothing when compared with the terrible inflictions occasionally and at uncertain periods visiting man, whether shut up, as it were, within the confined haunts of cities, or living apart in the open country, in situations where it might be reasonably imagined no such influences could reach him. The poison of typhus, for example, if it be a poison, spares none: in certain epidemics⁶ the citizen and the peasant suffer alike: the strong robust⁷ man in the prime of life is its special victim; cholera⁸ attacked the inhabitants of the remote and isolated⁹ cottage as certainly as the careful wealthy citizen, and with the same results. No mode of life, nor sex, nor age was security against it; no race, no locality.45 An inquiry¹⁰ into the origin of such influences is the most important to which man’s attention can be directed. These terrible epidemics appear under various forms; sometimes it is by typhus or influenza¹¹, cholera or plague; even those diseases which seem to be endemic, or confined to a locality, assume the form of epidemical raging pestilences¹², and then disappear for a time. Thus the remittents and yellow fevers of tropical climates do not always put out their whole strength; there is a lull¹³, a season of repose¹⁴, when man, deluded¹⁵ by the security of a few years, hopes that at last the evil influence has disappeared for ever. Vain hope! It moves in cycles, like the typhus of temperate¹⁶ climates, falsifying all predictions. Thus, in Jamaica, the grave of so many noble English regiments¹⁷, the fever, sometimes called remittent, sometimes yellow fever, exhibited its fitful attacks during eighteen years, in the following capricious manner, at a station called Port Antonio, about eighty miles from Kingston. At Stoney Hill Barracks, the disease was still more capricious.46 As the poison producing intermittents and remittents must be presumed to be always present, it is incomprehensible how it should at times cease its attacks on man, showing that another influence or element requires to be present to render its attack successful. Again, we find that within a limited range, a long residence in a land unhealthy to the stranger seems by acclimation¹⁹ to diminish if not entirely²⁰ to eradicate²¹ the susceptibility to disease on the part of the latter; but this opinion must be received cautiously and with reserve, for the phenomenon may be partly due to the difference in race, respecting which we as yet know but little. The banks of the Scheldt, the Polders of Holland, and the mouths of the Rhine, the Danube, and the Indus, are healthy to the natives of these districts; graves to foreigners. In all inquiries²² of this kind, these well-established facts must not be overlooked.

§ 2. When a chemical substance is applied²³ externally or internally to the living tissues of an animal sufficiently strong to dissolve the affinity²⁴ between them and the vital force, and to substitute for it other stronger affinities²⁵, the explanation of the phenomena²⁶ is easy, and the coarsest chemistry offers a solution. The action of caustic²⁷ potass, of concentrated sulphuric acid, present the examples of this kind of dissolution. Other substances alone poisonous when given in concentrated doses, are known to pass, when sufficiently diluted²⁸, through the blood, and be eliminated by secretion²⁹ and excretion from the body: after causing disturbances³⁰ more or less grave, more or less important, the combinations they form, if any, with the living organic molecules³¹ are overcome by the vital force, which then resumes its usual influence. Of such substances some pass off unaltered, others are decomposed³², and the bases only appear in the secretions³³ or excretions. Whilst passing through the lungs, certain of these vegetable salts combine with the oxygen of the air, and the respiration³⁴ in consequence becomes slower, or in other terms, they diminish the production of arterial blood.47

Now, these salts48 when placed in contact with animal and vegetable substances, perform the same function as in the lungs: they take a part in the combustion³⁵ going on, and, as in the living body, are converted into carbonates. Left to themselves for a time, from their aqueous solution, the acids composing them finally completely disappear.

Mineral acids and nonvolatile vegetable acids, as well as mineral salts with an alkaline base, have the property, when sufficiently concentrated, to arrest the whole process of this slow combustion;49 common salt, as is well-known, arrests putrefaction³⁶: so does alcohol.

The chemical action of certain other mineral salts is different, such as the salts of the peroxide of iron, of lead, bismuth, copper³⁷, and mercury. These are inorganic³⁸ poisons. They combine with the tissues of the organs, and so destroy life. The mode of action of the poisons of prussic acid, strychnine, morphine, &c., is as yet unknown.

“But there exists a class of substances no less fatal than the preceding, originating in certain decompositions. In a preceding Chapter (III.) we have inquired into the origin of these poisons, and shown them to originate in fermentation and putrefaction. Let us apply the chemical principles regulating these processes to organic matters, to the products of the animal economy; all the elements of these matters are derived⁴⁰ from the blood, the most complex of all existing substances. In decomposing⁴², a poison is occasionally produced speedily mortal when it comes in contact with the blood of the living animal. The venomous principle produced by decomposing animal bodies is not always the same: that originating in certain German sausages is quite peculiar⁴⁴; the person who partakes of this fatal dish dies mummified; he does not rot or fall to pieces like those who perish from wounds received in dissecting-rooms; on the contrary, he dries up and withers⁴⁵, but does not putrify.50 Liebig, the discoverer of this poison and its effects on man, states that the venom⁴³ is destroyed by boiling-water and alcohol, but that these do not absorb it.

Similar in the mode of action on the economy are the poisons of small-pox, plague, &c. The substances which arrest fermentation and putrefaction, also neutralize⁴⁶ the power of these poisons; but the essence of these poisons has not yet been obtained in an isolated form, and thus nothing positive is known of its real nature. One thing seems certain; contagions, poisons and miasms are not living beings nor animalcules, any more than yeast⁴⁷. They may be, and probably are, produced by fermentation, but this is neither caused by nor terminates in the formation of living animalcules, to which all or any of these phenomena might be attributed.

A nice distinction has been drawn⁴⁸ by a distinguished⁴⁹ chemist between a contagion² properly so-called and a miasm. When the disease-producing matter is the product of a disease, it is a contagion; if it be the product of putrefaction or of eremacausis of any substance, animal or vegetable,—does it act by virtue⁵⁰ of its chemical character, and not of its condition (etat), in forming a combination, or in causing a decomposition³⁹, it is then a miasm.

The history of diseases so originating scarcely supports this view. Typhus, which at times seems to originate in a miasm, at times seems to assume a contagious⁵¹ character. The same may be said of yellow fever. But however this may be, the distinction applies to such diseases as intermittent¹⁸ and remittent fevers, which originating in a miasm, itself springing from the putrescence of animal or vegetable bodies, gives rise to disease which does not reproduce the miasm. Now, between diseases so produced and those arising from contagion properly so called, there is this remarkable⁵² distinction: the blood once altered is no longer susceptible⁵³ of the same contagion, whereas against miasms there is no such security.51

In every contagious disease, and perhaps even in those simply arising from miasms, there is an odour which fills the chambers⁵⁴ of the sick, and is recognisable at once. Ammonia is very generally present, as it is wherever animal decompositions are going on, that is, putrefaction. The foul⁵⁵ airs emanating⁵⁶ from stagnant⁵⁷ and neglected ditches is composed, as has been long known to chemists, of carbonic acid and sulphuretted hydrogen gases, and these are viewed by some as amongst the most dangerous of miasms. These gases may be destroyed by acid vapours now in common use.52 From chemistry we also derive⁴¹ another valuable lesson in respect of substances directly destroying human life. The materials ready to undergo putrefaction, and thus to generate miasms, may all be present, and yet no miasms are given out, and man escapes; this security depends upon the absence of that third principle requisite⁵⁸ to bring the others into activity.

Thus it happens that in his extensive and elaborate inquiries, Major Tulloch was continually met by difficulties which overthrew⁵⁹ at once all existing medical theories, rendering⁶⁰ it even probable that the supposed relation of cause and effect between marshes⁶¹ and miasms, and miasm and fever, was merely accidental. In what that third element consists, that immediately exciting power which urges on the decomposition to an extent it had not before attained⁶², rendering that miasm mortal, or at least most dangerous, which heretofore the vital force was able to resist, has not yet been discovered.

Is it electricity? is it ozone⁶³?53 or does it depend on some unknown principle in the elements of the atmosphere, for the detection of which we have no instrument? Does security in such cases depend on the presence in the atmosphere of some such principle as ozone? Whatever be the cause, the fact is certain; epidemics follow cycles of increase and decrease; like comets, they come and disappear at long intervals⁶⁴. Our business in the mean time lies with what is constantly present, in a more or less aggravated⁶⁵ form—the malaria⁶⁶ continually reproduced, always efficient in certain regions of the earth; in the overcoming of which, as I have endeavoured to show, well-directed human industry is far from unavailing.

1 contagions   

传染( contagion的名词复数 )； 接触传染； 道德败坏； 歪风

参考例句：

• They got caught in social contagions and reinforced each other's risk assessments. 他们都被这场蔓延的危机围困，重新加强互相的风险评估。
• And you'll be filled with a heartfelt joy that is highly contagions! 然后你会洋溢着真心的喜悦，并且感染他人！

2 contagion   

n.(通过接触的疾病)传染；蔓延

参考例句：

• A contagion of fear swept through the crowd.一种恐惧感在人群中迅速蔓延开。
• The product contagion effect has numerous implications for marketing managers and retailers.产品传染效应对市场营销管理者和零售商都有很多的启示。

3 atmospheric   

adj.大气的，空气的；大气层的；大气所引起的

参考例句：

• Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
• Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。

4 hereditary   

adj.遗传的，遗传性的，可继承的，世袭的

参考例句：

• The Queen of England is a hereditary ruler.英国女王是世袭的统治者。
• In men,hair loss is hereditary.男性脱发属于遗传。

5 sufficiently   

adv.足够地，充分地

参考例句：

• It turned out he had not insured the house sufficiently.原来他没有给房屋投足保险。
• The new policy was sufficiently elastic to accommodate both views.新政策充分灵活地适用两种观点。

6 epidemics   

n．流行病

参考例句：

• Reliance upon natural epidemics may be both time-consuming and misleading. 依靠天然的流行既浪费时间，又会引入歧途。
• The antibiotic epidemics usually start stop when the summer rainy season begins. 传染病通常会在夏天的雨季停止传播。

7 robust   

adj.强壮的，强健的，粗野的，需要体力的，浓的

参考例句：

• She is too tall and robust.她个子太高，身体太壮。
• China wants to keep growth robust to reduce poverty and avoid job losses,AP commented.美联社评论道，中国希望保持经济强势增长，以减少贫困和失业状况。

8 cholera   

n.霍乱

参考例句：

• The cholera outbreak has been contained.霍乱的发生已被控制住了。
• Cholera spread like wildfire through the camps.霍乱在营地里迅速传播。

9 isolated   

adj.与世隔绝的

参考例句：

• His bad behaviour was just an isolated incident. 他的不良行为只是个别事件。
• Patients with the disease should be isolated. 这种病的患者应予以隔离。

10 inquiry   

n.打听，询问，调查，查问

参考例句：

• Many parents have been pressing for an inquiry into the problem.许多家长迫切要求调查这个问题。
• The field of inquiry has narrowed down to five persons.调查的范围已经缩小到只剩5个人了。

11 influenza   

n.流行性感冒，流感

参考例句：

• They took steps to prevent the spread of influenza.他们采取措施
• Influenza is an infectious disease.流感是一种传染病。

12 pestilences   

n.瘟疫， （尤指）腺鼠疫( pestilence的名词复数 )

参考例句：

• The Black Death is one the most serious pestilences in history. 黑死病是人类历史上众多瘟疫中危害很大的瘟疫之一，它是中世纪历史上的一次惨重的生态灾难。 来自互联网

13 lull   

v.使安静，使入睡，缓和，哄骗；n.暂停，间歇

参考例句：

• The drug put Simpson in a lull for thirty minutes.药物使辛普森安静了30分钟。
• Ground fighting flared up again after a two-week lull.经过两个星期的平静之后，地面战又突然爆发了。

14 repose   

v.(使)休息；n.安息

参考例句：

• Don't disturb her repose.不要打扰她休息。
• Her mouth seemed always to be smiling,even in repose.她的嘴角似乎总是挂着微笑，即使在睡眠时也是这样。

15 deluded   

v.欺骗，哄骗( delude的过去式和过去分词 )

参考例句：

• Don't be deluded into thinking that we are out of danger yet. 不要误以为我们已脱离危险。
• She deluded everyone into following her. 她骗得每个人都听信她的。 来自《简明英汉词典》

16 temperate   

adj.温和的，温带的，自我克制的，不过分的

参考例句：

• Asia extends across the frigid,temperate and tropical zones.亚洲地跨寒、温、热三带。
• Great Britain has a temperate climate.英国气候温和。

17 regiments   

（军队的）团( regiment的名词复数 )； 大量的人或物

参考例句：

• The three regiments are all under the command of you. 这三个团全归你节制。
• The town was garrisoned with two regiments. 该镇有两团士兵驻守。

18 intermittent   

adj.间歇的，断断续续的

参考例句：

• Did you hear the intermittent sound outside?你听见外面时断时续的声音了吗？
• In the daytime intermittent rains freshened all the earth.白天里，时断时续地下着雨，使整个大地都生气勃勃了。

19 acclimation   

n.服水土，顺应，适应环境；服习；驯化

参考例句：

• The incipient lethal temperature are shifted upward by acclimation to warmer temperature. 四角蛤蜊起始致死温是随驯化温度的变化而改变。 来自互联网
• A respiration rate compensation throught thermal acclimation is demonstrated by E. 温度驯化能导致速率补偿，表现为25℃驯化河蟹的呼吸率明显低于10℃驯化河蟹的呼吸率。 来自互联网

20 entirely   

ad.全部地，完整地；完全地，彻底地

参考例句：

• The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
• His life was entirely given up to the educational work. 他的一生统统献给了教育工作。

21 eradicate   

v.根除，消灭，杜绝

参考例句：

• These insects are very difficult to eradicate.这些昆虫很难根除。
• They are already battling to eradicate illnesses such as malaria and tetanus.他们已经在努力消灭疟疾、破伤风等疾病。

22 inquiries   

n.调查( inquiry的名词复数 )；疑问；探究；打听

参考例句：

• He was released on bail pending further inquiries. 他获得保释，等候进一步调查。
• I have failed to reach them by postal inquiries. 我未能通过邮政查询与他们取得联系。 来自《现代汉英综合大词典》

23 applied   

adj.应用的；v.应用，适用

参考例句：

• She plans to take a course in applied linguistics.她打算学习应用语言学课程。
• This cream is best applied to the face at night.这种乳霜最好晚上擦脸用。

24 affinity   

n.亲和力，密切关系

参考例句：

• I felt a great affinity with the people of the Highlands.我被苏格兰高地人民深深地吸引。
• It's important that you share an affinity with your husband.和丈夫有共同的爱好是十分重要的。

25 affinities   

n.密切关系( affinity的名词复数 )；亲近；（生性）喜爱；类同

参考例句：

• Cubism had affinities with the new European interest in Jazz. 主体派和欧洲新近的爵士音乐热有密切关系。 来自辞典例句
• The different isozymes bind calcium ions with different affinities. 不同的同功酶以不同的亲和力与钙离子相结合。 来自辞典例句

26 phenomena   

n.现象

参考例句：

• Ade couldn't relate the phenomena with any theory he knew.艾德无法用他所知道的任何理论来解释这种现象。
• The object of these experiments was to find the connection,if any,between the two phenomena.这些实验的目的就是探索这两种现象之间的联系，如果存在着任何联系的话。

27 caustic   

adj.刻薄的，腐蚀性的

参考例句：

• He opened his mouth to make a caustic retort.他张嘴开始进行刻薄的反击。
• He enjoys making caustic remarks about other people.他喜欢挖苦别人。

28 diluted   

无力的，冲淡的

参考例句：

• The paint can be diluted with water to make a lighter shade. 这颜料可用水稀释以使色度淡一些。
• This pesticide is diluted with water and applied directly to the fields. 这种杀虫剂用水稀释后直接施用在田里。

29 secretion   

n.分泌

参考例句：

• Is there much secretion from your eyes?你眼里的分泌物多吗？
• In addition,excessive secretion of oil,water scarcity are also major factors.除此之外，油脂分泌过盛、缺水也都是主要因素。

30 disturbances   

n.骚乱( disturbance的名词复数 )；打扰；困扰；障碍

参考例句：

• The government has set up a commission of inquiry into the disturbances at the prison. 政府成立了一个委员会来调查监狱骚乱事件。
• Extra police were called in to quell the disturbances. 已调集了增援警力来平定骚乱。

31 molecules   

分子( molecule的名词复数 )

参考例句：

• The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
• Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。

32 decomposed   

已分解的，已腐烂的

参考例句：

• A liquid is decomposed when an electric current passes through it. 当电流通过时，液体就分解。
• Water can be resolved [decomposed] into hydrogen and oxygen. 水可分解为氢和氧。

33 secretions   

n.分泌（物）( secretion的名词复数 )

参考例句：

• Lysozyme is an enzyme found in egg white, tears, and other secretions. 溶菌酶是存在于卵白、泪和其他分泌物中的一种酶。 来自辞典例句
• Chest percussion and vibration are used with postural drainage to help dislodge secretions. 在做体位引流时要敲击和振动胸部帮助分泌物松动排出。 来自辞典例句

34 respiration   

n.呼吸作用；一次呼吸；植物光合作用

参考例句：

• They tried artificial respiration but it was of no avail.他们试做人工呼吸，可是无效。
• They made frequent checks on his respiration,pulse and blood.他们经常检查他的呼吸、脉搏和血液。

35 combustion   

n.燃烧；氧化；骚动

参考例句：

• We might be tempted to think of combustion.我们也许会联想到氧化。
• The smoke formed by their combustion is negligible.由它燃烧所生成的烟是可忽略的。

36 putrefaction   

n.腐坏，腐败

参考例句：

• Putrefaction is the anaerobic degradation of proteinaceous materials.腐败作用是蛋白性物质的厌氧降解作用。
• There is a clear difference between fermentation and putrefaction.发酵与腐败有明显区别。

37 copper   

n.铜；铜币；铜器；adj.铜(制)的；(紫)铜色的

参考例句：

• The students are asked to prove the purity of copper.要求学生们检验铜的纯度。
• Copper is a good medium for the conduction of heat and electricity.铜是热和电的良导体。

38 inorganic   

adj.无生物的；无机的

参考例句：

• The fundamentals of inorganic chemistry are very important.无机化学的基础很重要。
• This chemical plant recently bought a large quantity of inorganic salt.这家化工厂又买进了大量的无机盐。

39 decomposition   

n. 分解, 腐烂, 崩溃

参考例句：

• It is said that the magnetite was formed by a chemical process called thermal decomposition. 据说这枚陨星是在热分解的化学过程中形成的。
• The dehydration process leads to fairly extensive decomposition of the product. 脱水过程会导致产物相当程度的分解。

40 derived   

vi.起源；由来；衍生；导出v.得到( derive的过去式和过去分词 )；（从…中）得到获得；源于；（从…中）提取

参考例句：

• Many English words are derived from Latin and Greek. 英语很多词源出于拉丁文和希腊文。 来自《简明英汉词典》
• He derived his enthusiasm for literature from his father. 他对文学的爱好是受他父亲的影响。 来自《简明英汉词典》

41 derive   

v.取得；导出；引申；来自；源自；出自

参考例句：

• We derive our sustenance from the land.我们从土地获取食物。
• We shall derive much benefit from reading good novels.我们将从优秀小说中获得很大好处。

42 decomposing   

腐烂( decompose的现在分词 )； （使）分解； 分解（某物质、光线等）

参考例句：

• The air was filled with the overpowering stench of decomposing vegetation. 空气中充满了令人难以忍受的腐烂植物的恶臭。
• Heat was obtained from decomposing manures and hot air flues. 靠肥料分解和烟道为植物提供热量。

43 venom   

n.毒液，恶毒，痛恨

参考例句：

• The snake injects the venom immediately after biting its prey.毒蛇咬住猎物之后马上注入毒液。
• In fact,some components of the venom may benefit human health.事实上，毒液的某些成分可能有益于人类健康。

44 peculiar   

adj.古怪的，异常的；特殊的，特有的

参考例句：

• He walks in a peculiar fashion.他走路的样子很奇特。
• He looked at me with a very peculiar expression.他用一种很奇怪的表情看着我。

45 withers   

马肩隆

参考例句：

• The girl's pitiful history would wring one's withers. 这女孩子的经历令人心碎。
• "I will be there to show you," and so Mr. Withers withdrew. “我会等在那里，领你去看房间的，"威瑟斯先生这样说着，退了出去。 来自英汉文学 - 嘉莉妹妹

46 neutralize   

v.使失效、抵消，使中和

参考例句：

• Nothing could neutralize its good effects.没有什么能抵消它所产生的好影响。
• Acids neutralize alkalis and vice versa.酸能使碱中和碱，亦能使酸中和。

47 yeast   

n.酵母；酵母片；泡沫；v.发酵；起泡沫

参考例句：

• Yeast can be used in making beer and bread.酵母可用于酿啤酒和发面包。
• The yeast began to work.酵母开始发酵。

48 drawn   

v.拖，拉，拔出；adj.憔悴的，紧张的

参考例句：

• All the characters in the story are drawn from life.故事中的所有人物都取材于生活。
• Her gaze was drawn irresistibly to the scene outside.她的目光禁不住被外面的风景所吸引。

49 distinguished   

adj.卓越的，杰出的，著名的

参考例句：

• Elephants are distinguished from other animals by their long noses.大象以其长长的鼻子显示出与其他动物的不同。
• A banquet was given in honor of the distinguished guests.宴会是为了向贵宾们致敬而举行的。

50 virtue   

n.德行，美德；贞操；优点；功效，效力

参考例句：

• He was considered to be a paragon of virtue.他被认为是品德尽善尽美的典范。
• You need to decorate your mind with virtue.你应该用德行美化心灵。

51 contagious   

adj.传染性的，有感染力的

参考例句：

• It's a highly contagious infection.这种病极易传染。
• He's got a contagious laugh.他的笑富有感染力。

52 remarkable   

adj.显著的，异常的，非凡的，值得注意的

参考例句：

• She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
• These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。

53 susceptible   

adj.过敏的，敏感的；易动感情的，易受感动的

参考例句：

• Children are more susceptible than adults.孩子比成人易受感动。
• We are all susceptible to advertising.我们都易受广告的影响。

54 chambers   

n.房间( chamber的名词复数 )；（议会的）议院；卧室；会议厅

参考例句：

• The body will be removed into one of the cold storage chambers. 尸体将被移到一个冷冻间里。 来自《简明英汉词典》
• Mr Chambers's readable book concentrates on the middle passage: the time Ransome spent in Russia. Chambers先生的这本值得一看的书重点在中间：Ransome在俄国的那几年。 来自互联网

55 foul   

adj.污秽的；邪恶的；v.弄脏；妨害；犯规；n.犯规

参考例句：

• Take off those foul clothes and let me wash them.脱下那些脏衣服让我洗一洗。
• What a foul day it is!多么恶劣的天气！

56 emanating   

v.从…处传出，传出( emanate的现在分词 )；产生，表现，显示

参考例句：

• Even so, there is a slight odour of potpourri emanating from Longfellow. 纵然如此，也还是可以闻到来自朗费罗的一种轻微的杂烩的味道。 来自辞典例句
• Many surface waters, particularly those emanating from swampy areas, are often colored to the extent. 许多地表水，特别是由沼泽地区流出的地表水常常染上一定程度的颜色。 来自辞典例句

57 stagnant   

adj.不流动的，停滞的，不景气的

参考例句：

• Due to low investment,industrial output has remained stagnant.由于投资少，工业生产一直停滞不前。
• Their national economy is stagnant.他们的国家经济停滞不前。

58 requisite   

adj.需要的，必不可少的；n.必需品

参考例句：

• He hasn't got the requisite qualifications for the job.他不具备这工作所需的资格。
• Food and air are requisite for life.食物和空气是生命的必需品。

59 overthrew   

overthrow的过去式

参考例句：

• The people finally rose up and overthrew the reactionary regime. 人们终于起来把反动的政权推翻了。
• They overthrew their King. 他们推翻了国王。

60 rendering   

n.表现，描写

参考例句：

• She gave a splendid rendering of Beethoven's piano sonata.她精彩地演奏了贝多芬的钢琴奏鸣曲。
• His narrative is a super rendering of dialect speech and idiom.他的叙述是方言和土语最成功的运用。

61 marshes   

n.沼泽，湿地( marsh的名词复数 )

参考例句：

• Cows were grazing on the marshes. 牛群在湿地上吃草。
• We had to cross the marshes. 我们不得不穿过那片沼泽地。 来自《简明英汉词典》

62 attained   

（通常经过努力）实现( attain的过去式和过去分词 )； 达到； 获得； 达到（某年龄、水平、状况）

参考例句：

• She has attained the degree of Master of Arts. 她已获得文学硕士学位。
• Lu Hsun attained a high position in the republic of letters. 鲁迅在文坛上获得崇高的地位。

63 ozone   

n.臭氧，新鲜空气

参考例句：

• The ozone layer is a protective layer around the planet Earth.臭氧层是地球的保护层。
• The capacity of ozone can adjust according of requirement.臭氧的产量可根据需要或调节。

64 intervals   

n.[军事]间隔( interval的名词复数 )；间隔时间；[数学]区间；（戏剧、电影或音乐会的）幕间休息

参考例句：

• The forecast said there would be sunny intervals and showers. 预报间晴，有阵雨。
• Meetings take place at fortnightly intervals. 每两周开一次会。

65 aggravated   

使恶化( aggravate的过去式和过去分词 )； 使更严重； 激怒； 使恼火

参考例句：

• If he aggravated me any more I shall hit him. 假如他再激怒我，我就要揍他。
• Far from relieving my cough, the medicine aggravated it. 这药非但不镇咳，反而使我咳嗽得更厉害。

66 malaria   

n.疟疾

参考例句：

• He had frequent attacks of malaria.他常患疟疾。
• Malaria is a kind of serious malady.疟疾是一种严重的疾病。