INTRODUCTION.

 In addition to the wide-spread desolating¹ epidemics² which appear from time to time, mysterious in their origin, progress, and cessation or disappearance—such, for example, as the plague of Athens, the plague of London in the time of Charles the Second of happy memory, the Indian or Asiatic cholera³ of modern times, and the disease called influenza⁴, a frequent visitor to Western Europe during the last half-century—there exist localities unceasingly under the influence of a poison inimical to human life. This poison, since it may be so called, is known to haunt the deltas⁵ of large rivers, and seems to be always present there; but it is found also, if we may determine its identity by the identity of its deleterious influence on men, in other and very various localities: sometimes it shows itself—and this most commonly—in marshy⁷ and fenny⁸ countries, where no large rivers exist, at other times by the banks of fresh-water lakes; now it haunts the forest, and now the open plain, where marsh⁶ and fen⁹, swamp and decaying vegetation, seem all but absent. As the inhabitants of such localities are especially afflicted¹⁰ with the fevers called intermittent¹¹ and remittent, it is the most natural thing in the world to ascribe to the locality itself the origin of these diseases. When, however, we attempt to generalize and assign to the same cause in a more concentrated form those terrible fevers which render tropical countries the graves of Europeans, great difficulties arise, and numerous objections, which the best of statisticians, not to mention the simply medical observer, have failed to elucidate¹² and remove. Thus physicians are not agreed as to the identity of the poison under all circumstances, or in other words, demonstrative evidence is still wanting to prove that the cause of fever on the western coasts of Africa is identical with that which has so often in the Antilles destroyed England’s chosen troops, decimated her fleets, crippled her power, annihilated¹³ her army, as at Walcheren, and broken up the health of many a sturdy yeoman by the banks of the Scheldt, of the Thames and its tributaries¹⁴.

To this poison the term malaria¹⁵ has been applied—a word borrowed from the Italian. This malaria is presumed, whatever it may be, to be the cause (though not exclusively), on evidence almost amounting to a certainty, of the fevers marked by intermissions and remissions; it may also be the cause of the more terrible febrile diseases called the yellow fever, the black vomit¹⁶, &c., of tropical countries. On this I do not insist. As regards intermitting and remitting¹⁷ febrile affections, we are all but certain that to such localities as I have just alluded¹⁸ to, their origin may be traced, however they may originate elsewhere. A long residence in Holland and Belgium (countries supposed by many to be in an especial manner the hot-bed and active parent of malaria) has enabled me to observe, I trust in an unprejudiced manner, some facts which may have escaped the observation of others. Long resident in that land, on which perished miserably¹⁹ the best equipped army (an army composed of veterans) which ever, perhaps, quitted England for foreign aggression²⁰; in that land on which perished the chosen garrisons²¹ of the mighty²² Napoleon; on that spot where they dragged on a miserable²³ existence, or perished in the prime of life; the writer of this essay enjoyed the best of health. Even admitting the full influence of a vigorous constitution, and an innate²⁴ vitality²⁵ equal to the neutralization²⁶ of all malaria, a something must still be ascribed to observation leading him to avoid the hurtful and insalubrious agencies at work around him—agencies ever active, ever seeking to destroy. This information the author has thought might be useful to others, and with this view he submits it to the public.

1 desolating   

毁坏( desolate的现在分词 )； 极大地破坏； 使沮丧； 使痛苦

参考例句：

• Most desolating were those evenings the belle-mere had envisaged for them. 最最凄凉的要数婆婆给她们设计的夜晚。

2 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。

3 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。

4 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。

5 deltas   

希腊字母表中第四个字母( delta的名词复数 )； （河口的）三角洲

参考例句：

• Tidal channels, deltas, and washover fans are characteristically associated with offshore bars. 潮汐水道、三角洲和冲刷扇典型地与滨外砂洲伴生在一起。
• I know many of the early civilizations prospered on deltas. 我知道很多古老的文明都是在三角洲上蓬勃发展起来的。

6 marsh   

n.沼泽，湿地

参考例句：

• There are a lot of frogs in the marsh.沼泽里有许多青蛙。
• I made my way slowly out of the marsh.我缓慢地走出这片沼泽地。

7 marshy   

adj.沼泽的

参考例句：

• In August 1935,we began our march across the marshy grassland. 1935年8月，我们开始过草地。
• The surrounding land is low and marshy. 周围的地低洼而多沼泽。

8 fenny   

adj.沼泽的；沼泽多的；长在沼泽地带的；住在沼泽地的

参考例句：

9 fen   

n.沼泽，沼池

参考例句：

• The willows over all the fen rippled and whitened like a field of wheat.沼泽上的柳树，随风一起一伏，泛出白光，就象一片麦田一样。
• There is a fen around each island.每个岛屿周围有一个沼泽。

10 afflicted   

使受痛苦，折磨( afflict的过去式和过去分词 )

参考例句：

• About 40% of the country's population is afflicted with the disease. 全国40%左右的人口患有这种疾病。
• A terrible restlessness that was like to hunger afflicted Martin Eden. 一阵可怕的、跟饥饿差不多的不安情绪折磨着马丁·伊登。

11 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。

12 elucidate   

v.阐明，说明

参考例句：

• The note help to elucidate the most difficult parts of the text.这些注释有助于弄清文中最难懂的部分。
• This guide will elucidate these differences and how to exploit them.这篇指导将会阐述这些不同点以及如何正确利用它们。

13 annihilated   

v.（彻底）消灭( annihilate的过去式和过去分词 )；使无效；废止；彻底击溃

参考例句：

• Our soldiers annihilated a force of three hundred enemy troops. 我军战士消灭了300名敌军。 来自《现代汉英综合大词典》
• We annihilated the enemy. 我们歼灭了敌人。 来自《简明英汉词典》

14 tributaries   

n. 支流

参考例句：

• In such areas small tributaries or gullies will not show. 在这些地区，小的支流和冲沟显示不出来。
• These tributaries are subsequent streams which erode strike valley. 这些支流系即为蚀出走向谷的次生河。

15 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。

16 vomit   

v.呕吐，作呕；n.呕吐物，吐出物

参考例句：

• They gave her salty water to make her vomit.他们给她喝盐水好让她吐出来。
• She was stricken by pain and began to vomit.她感到一阵疼痛，开始呕吐起来。

17 remitting   

v.免除（债务），宽恕( remit的现在分词 )；使某事缓和；寄回，传送

参考例句：

• You should fill in the money order carefully before remitting money. 在办理汇款业务前，应准确填写汇款单。
• Please wait for invoice detailing shipping costs before remitting your payment. 汇款前请为您的付款详细运费发票等。

18 alluded   

提及，暗指( allude的过去式和过去分词 )

参考例句：

• In your remarks you alluded to a certain sinister design. 在你的谈话中，你提到了某个阴谋。
• She also alluded to her rival's past marital troubles. 她还影射了对手过去的婚姻问题。

19 miserably   

adv.痛苦地；悲惨地；糟糕地；极度地

参考例句：

• The little girl was wailing miserably. 那小女孩难过得号啕大哭。
• It was drizzling, and miserably cold and damp. 外面下着毛毛细雨，天气又冷又湿，令人难受。 来自《简明英汉词典》

20 aggression   

n.进攻，侵略，侵犯，侵害

参考例句：

• So long as we are firmly united, we need fear no aggression.只要我们紧密地团结，就不必惧怕外来侵略。
• Her view is that aggression is part of human nature.她认为攻击性是人类本性的一部份。

21 garrisons   

守备部队，卫戍部队( garrison的名词复数 )

参考例句：

• I've often seen pictures of such animals at the garrisons. 在要塞里，我经常看到这种动物的画片。
• Use a Black Hand to garrisons, and take it for yourself. 用黑手清空驻守得步兵，为自己占一个。

22 mighty   

adj.强有力的；巨大的

参考例句：

• A mighty force was about to break loose.一股巨大的力量即将迸发而出。
• The mighty iceberg came into view.巨大的冰山出现在眼前。

23 miserable   

adj.悲惨的，痛苦的；可怜的，糟糕的

参考例句：

• It was miserable of you to make fun of him.你取笑他，这是可耻的。
• Her past life was miserable.她过去的生活很苦。

24 innate   

adj.天生的，固有的，天赋的

参考例句：

• You obviously have an innate talent for music.你显然有天生的音乐才能。
• Correct ideas are not innate in the mind.人的正确思想不是自己头脑中固有的。

25 vitality   

n.活力，生命力，效力

参考例句：

• He came back from his holiday bursting with vitality and good health.他度假归来之后，身强体壮，充满活力。
• He is an ambitious young man full of enthusiasm and vitality.他是个充满热情与活力的有远大抱负的青年。

26 neutralization   

n.中立化，中立状态，中和

参考例句：

• Neutralization is the interaction of a base and an acid. 中和作用是碱和酸的相互作用。 来自辞典例句
• The neutralization equivalent of the polymer is 750(theoretical-681). 聚和物的中和当量为750（理论上为681）。 来自辞典例句