Chapter 23

During the six or seven days immediately following we remained in our hiding-place upon the hill, going out only occasionally, and then with the greatest precaution, for water and filberts. We had made a kind of penthouse on the platform, furnishing it with a bed of dry leaves, and placing in it three large flat stones, which served us for both fireplace and table. We kindled¹ a fire without difficulty by rubbing two pieces of dry wood together, the one soft, the other hard. The bird we had taken in such good season proved excellent eating, although somewhat tough. It was not an oceanic fowl², but a species of bittern, with jet black and grizzly³ plumage, and diminutive⁴ wings in proportion to its bulk. We afterward⁵ saw three of the same kind in the vicinity of the ravine, apparently⁶ seeking for the one we had captured; but, as they never alighted, we had no opportunity of catching⁷ them.

As long as this fowl lasted we suffered nothing from our situation, but it was now entirely⁸ consumed, and it became absolutely necessary that we should look out for provision. The filberts would not satisfy the cravings of hunger, afflicting⁹ us, too, with severe gripings of the bowels¹⁰, and, if freely indulged in, with violent headache. We had seen several large tortoises near the seashore to the eastward¹¹ of the hill, and perceived they might be easily taken, if we could get at them without the observation of the natives. It was resolved, therefore, to make an attempt at descending¹².

We commenced by going down the southern declivity¹³, which seemed to offer the fewest difficulties, but had not proceeded a hundred yards before (as we had anticipated from appearances on the hilltop) our progress was entirely arrested by a branch of the gorge¹⁴ in which our companions had perished. We now passed along the edge of this for about a quarter of a mile, when we were again stopped by a precipice¹⁵ of immense depth, and, not being able to make our way along the brink¹⁶ of it, we were forced to retrace¹⁷ our steps by the main ravine.

We now pushed over to the eastward, but with precisely¹⁸ similar fortune. After an hour’s scramble¹⁹, at the risk of breaking our necks, we discovered that we had merely descended²¹ into a vast pit of black granite²², with fine dust at the bottom, and whence the only egress²³ was by the rugged²⁴ path in which we had come down. Toiling²⁵ again up this path, we now tried the northern edge of the hill. Here we were obliged to use the greatest possible caution in our manoeuvres, as the least indiscretion would expose us to the full view of the savages²⁶ in the village. We crawled along, therefore, on our hands and knees, and, occasionally, were even forced to throw ourselves at full length, dragging our bodies along by means of the shrubbery. In this careful manner we had proceeded but a little way, when we arrived at a chasm²⁷ far deeper than any we had yet seen, and leading directly into the main gorge. Thus our fears were fully²⁸ confirmed, and we found ourselves cut off entirely from access to the world below. Thoroughly²⁹ exhausted³⁰ by our exertions³², we made the best of our way back to the platform, and throwing ourselves upon the bed of leaves, slept sweetly and soundly for some hours.

For several days after this fruitless search we were occupied in exploring every part of the summit of the hill, in order to inform ourselves of its actual resources. We found that it would afford us no food, with the exception of the unwholesome filberts, and a rank species of scurvy³³ grass, which grew in a little patch of not more than four rods square, and would be soon exhausted. On the fifteenth of February, as near as I can remember, there was not a blade of this left, and the nuts were growing scarce; our situation, therefore, could hardly be more lamentable³⁴.5 On the sixteenth we again went round the walls of our prison, in hope of finding some avenue of escape; but to no purpose. We also descended the chasm in which we had been overwhelmed, with the faint expectation of discovering, through this channel, some opening to the main ravine. Here, too, we were disappointed, although we found and brought up with us a musket³⁵.

5 This day was rendered remarkable³⁶ by our observing in the south several huge wreaths of the grayish vapour I have spoken of.

On the seventeenth we set out with the determination of examining more thoroughly the chasm of black granite into which we had made our way in the first search. We remembered that one of the fissures³⁷ in the sides of this pit had been but partially³⁹ looked into, and we were anxious to explore it, although with no expectation of discovering here any opening.

We found no great difficulty in reaching the bottom of the hollow as before, and were now sufficiently⁴⁰ calm to survey it with some attention. It was, indeed, one of the most singular-looking places imaginable, and we could scarcely bring ourselves to believe it altogether the work of nature. The pit, from its eastern to its western extremity⁴¹, was about five hundred yards in length, when all its windings⁴² were threaded; the distance from east to west in a straight line not being more (I should suppose, having no means of accurate examination) than forty or fifty yards. Upon first descending into the chasm, that is to say, for a hundred feet downward from the summit of the hill, the sides of the abyss bore little resemblance to each other, and, apparently, had at no time been connected, the one surface being of the soapstone, and the other of marl, granulated with some metallic⁴³ matter. The average breadth or interval⁴⁴ between the two cliffs was probably here sixty feet, but there seemed to be no regularity⁴⁵ of formation. Passing down, however, beyond the limit spoken of, the interval rapidly contracted, and the sides began to run parallel, although, for some distance farther, they were still dissimilar in their material and form of surface. Upon arriving within fifty feet of the bottom, a perfect regularity commenced. The sides were now entirely uniform in substance, in colour, and in lateral⁴⁶ direction, the material being a very black and shining granite, and the distance between the two sides, at all points facing each other, exactly twenty yards. The precise formation of the chasm will be best understood by means of a delineation⁴⁷ taken upon the spot; for I had luckily with me a pocketbook and pencil, which I preserved with great care through a long series of subsequent adventure, and to which I am indebted for memoranda⁴⁸ of many subjects which would otherwise have been crowded from my remembrance.

This figure (see fig⁴⁹. 1) gives the general outlines of the chasm, without the minor⁵⁰ cavities in the sides, of which there were several, each cavity having a corresponding protuberance opposite. The bottom of the gulf⁵¹ was covered to the depth of three or four inches with a powder almost impalpable, beneath which we found a continuation of the black granite. To the right, at the lower extremity, will be noticed the appearance of a small opening; this is the fissure³⁸ alluded⁵² to above, and to examine which more minutely than before was the object of our second visit. We now pushed into it with vigor⁵³, cutting away a quantity of brambles which impeded⁵⁴ us, and removing a vast heap of sharp flints somewhat resembling arrowheads in shape. We were encouraged to persevere⁵⁵, however, by perceiving some little light proceeding⁵⁶ from the farther end. We at length squeezed our way for about thirty feet, and found that the aperture⁵⁷ was a low and regularly formed arch, having a bottom of the same impalpable powder as that in the main chasm. A strong light now broke upon us, and, turning a short bend, we found ourselves in another lofty chamber⁵⁸, similar to the one we had left in every respect but longitudinal form. Its general figure is here given. (See fig. 2.)

The total length of this chasm, commencing at the opening a and proceeding round the curve b to the extremity d, is five hundred and fifty yards. At c we discovered a small aperture similar to the one through which we had issued from the other chasm, and this was choked up in the same manner with brambles and a quantity of the white arrowhead flints. We forced our way through it, finding it about forty feet long, and emerged into a third chasm. This, too, was precisely like the first, except in its longitudinal shape, which was thus. (See fig. 3.)

We found the entire length of the third chasm three hundred and twenty yards. At the point a was an opening about six feet wide, and extending fifteen feet into the rock, where it terminated in a bed of marl, there being no other chasm beyond, as we had expected. We were about leaving this fissure, into which very little light was admitted, when Peters called my attention to a range of singular-looking indentures⁵⁹ in the surface of the marl forming the termination of the cul-de-sac. With a very slight exertion³¹ of the imagination, the left, or most northern of these indentures might have been taken for the intentional⁶⁰, although rude, representation of a human figure standing⁶¹ erect⁶², with outstretched arm. The rest of them bore also some little resemblance to alphabetical⁶³ characters, and Peters was willing, at all events, to adopt the idle opinion that they were really such. I convinced him of his error, finally, by directing his attention to the floor of the fissure, where, among the powder, we picked up, piece by piece, several large flakes⁶⁴ of the marl, which had evidently been broken off by some convulsion from the surface where the indentures were found, and which had projecting points exactly fitting the indentures; thus proving them to have been the work of nature. Fig. 4 presents an accurate copy of the whole.

After satisfying ourselves that these singular caverns⁶⁵ afforded us no means of escape from our prison, we made our way back, dejected and dispirited, to the summit of the hill. Nothing worth mentioning occurred during the next twenty-four hours, except that, in examining the ground to the eastward of the third chasm, we found two triangular⁶⁶ holes of great depth, and also with black granite sides. Into these holes we did not think it worth while to attempt descending, as they had the appearance of mere²⁰ natural wells, without outlet⁶⁷. They were each about twenty yards in circumference⁶⁸, and their shape, as well as relative position in regard to the third chasm, is shown in figure 5.

1 kindled   

（使某物）燃烧，着火( kindle的过去式和过去分词 )； 激起（感情等）； 发亮，放光

参考例句：

• We watched as the fire slowly kindled. 我们看着火慢慢地燃烧起来。
• The teacher's praise kindled a spark of hope inside her. 老师的赞扬激起了她内心的希望。

2 fowl   

n.家禽，鸡，禽肉

参考例句：

• Fowl is not part of a traditional brunch.禽肉不是传统的早午餐的一部分。
• Since my heart attack,I've eaten more fish and fowl and less red meat.自从我患了心脏病后，我就多吃鱼肉和禽肉，少吃红色肉类。

3 grizzly   

adj.略为灰色的，呈灰色的；n.灰色大熊

参考例句：

• This grizzly liked people.这只灰熊却喜欢人。
• Grizzly bears are not generally social creatures.一般说来，灰熊不是社交型动物。

4 diminutive   

adj.小巧可爱的，小的

参考例句：

• Despite its diminutive size,the car is quite comfortable.尽管这辆车很小，但相当舒服。
• She has diminutive hands for an adult.作为一个成年人，她的手显得非常小。

5 afterward   

adv.后来；以后

参考例句：

• Let's go to the theatre first and eat afterward. 让我们先去看戏，然后吃饭。
• Afterward,the boy became a very famous artist.后来，这男孩成为一个很有名的艺术家。

6 apparently   

adv.显然地；表面上，似乎

参考例句：

• An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
• He was apparently much surprised at the news.他对那个消息显然感到十分惊异。

7 catching   

adj.易传染的，有魅力的，迷人的，接住

参考例句：

• There are those who think eczema is catching.有人就是认为湿疹会传染。
• Enthusiasm is very catching.热情非常富有感染力。

8 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。

9 afflicting   

痛苦的

参考例句：

• Violent crime is only one of the maladies afflicting modern society. 暴力犯罪仅仅是困扰现代社会的严重问题之一。
• Violent crime is only one of the maladies afflicting modern society. 暴力犯罪仅仅是危害社会的弊病之一。

10 bowels   

n.肠，内脏，内部；肠( bowel的名词复数 )；内部，最深处

参考例句：

• Salts is a medicine that causes movements of the bowels. 泻盐是一种促使肠子运动的药物。 来自《简明英汉词典》
• The cabins are in the bowels of the ship. 舱房设在船腹内。 来自《简明英汉词典》

11 eastward   

adv.向东；adj.向东的；n.东方，东部

参考例句：

• The river here tends eastward.这条河从这里向东流。
• The crowd is heading eastward,believing that they can find gold there.人群正在向东移去，他们认为在那里可以找到黄金。

12 descending   

n. 下行 adj. 下降的

参考例句：

• The results are expressed in descending numerical order . 结果按数字降序列出。
• The climbers stopped to orient themselves before descending the mountain. 登山者先停下来确定所在的位置，然后再下山。

13 declivity   

n.下坡，倾斜面

参考例句：

• I looked frontage straightly,going declivity one by one.我两眼直视前方，一路下坡又下坡。
• He had rolled down a declivity of twelve or fifteen feet.他是从十二尺或十五尺高的地方滚下来的。

14 gorge   

n.咽喉，胃，暴食，山峡；v.塞饱，狼吞虎咽地吃

参考例句：

• East of the gorge leveled out.峡谷东面地势变得平坦起来。
• It made my gorge rise to hear the news.这消息令我作呕。

15 precipice   

n.悬崖，危急的处境

参考例句：

• The hut hung half over the edge of the precipice.那间小屋有一半悬在峭壁边上。
• A slight carelessness on this precipice could cost a man his life.在这悬崖上稍一疏忽就会使人丧生。

16 brink   

n.(悬崖、河流等的)边缘，边沿

参考例句：

• The tree grew on the brink of the cliff.那棵树生长在峭壁的边缘。
• The two countries were poised on the brink of war.这两个国家处于交战的边缘。

17 retrace   

v.折回；追溯，探源

参考例句：

• He retraced his steps to the spot where he'd left the case.他折回到他丢下箱子的地方。
• You must retrace your steps.你必须折回原来走过的路。

18 precisely   

adv.恰好，正好，精确地，细致地

参考例句：

• It's precisely that sort of slick sales-talk that I mistrust.我不相信的正是那种油腔滑调的推销宣传。
• The man adjusted very precisely.那个人调得很准。

19 scramble   

v.爬行，攀爬，杂乱蔓延，碎片，片段，废料

参考例句：

• He broke his leg in his scramble down the wall.他爬墙摔断了腿。
• It was a long scramble to the top of the hill.到山顶须要爬登一段长路。

20 mere   

adj.纯粹的；仅仅，只不过

参考例句：

• That is a mere repetition of what you said before.那不过是重复了你以前讲的话。
• It's a mere waste of time waiting any longer.再等下去纯粹是浪费时间。

21 descended   

a.为...后裔的，出身于...的

参考例句：

• A mood of melancholy descended on us. 一种悲伤的情绪袭上我们的心头。
• The path descended the hill in a series of zigzags. 小路呈连续的之字形顺着山坡蜿蜒而下。

22 granite   

adj.花岗岩，花岗石

参考例句：

• They squared a block of granite.他们把一块花岗岩加工成四方形。
• The granite overlies the older rocks.花岗岩躺在磨损的岩石上面。

23 egress   

n.出去；出口

参考例句：

• Safe access and egress can be achieved by various methods.可以采用各种方法安全的进入或离开。
• Drains achieve a ready egress of the liquid blood.引流能为血液提供一个容易的出口。

24 rugged   

adj.高低不平的，粗糙的，粗壮的，强健的

参考例句：

• Football players must be rugged.足球运动员必须健壮。
• The Rocky Mountains have rugged mountains and roads.落基山脉有崇山峻岭和崎岖不平的道路。

25 toiling   

长时间或辛苦地工作( toil的现在分词 )； 艰难缓慢地移动，跋涉

参考例句：

• The fiery orator contrasted the idle rich with the toiling working classes. 这位激昂的演说家把无所事事的富人同终日辛劳的工人阶级进行了对比。
• She felt like a beetle toiling in the dust. She was filled with repulsion. 她觉得自己像只甲虫在地里挣扎，心中涌满愤恨。

26 savages   

未开化的人，野蛮人( savage的名词复数 )

参考例句：

• There're some savages living in the forest. 森林里居住着一些野人。
• That's an island inhabited by savages. 那是一个野蛮人居住的岛屿。

27 chasm   

n.深坑，断层，裂口，大分岐，利害冲突

参考例句：

• There's a chasm between rich and poor in that society.那社会中存在着贫富差距。
• A huge chasm gaped before them.他们面前有个巨大的裂痕。

28 fully   

adv.完全地，全部地，彻底地；充分地

参考例句：

• The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气，然后全部呼出。
• They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。

29 thoroughly   

adv.完全地，彻底地，十足地

参考例句：

• The soil must be thoroughly turned over before planting.一定要先把土地深翻一遍再下种。
• The soldiers have been thoroughly instructed in the care of their weapons.士兵们都系统地接受过保护武器的训练。

30 exhausted   

adj.极其疲惫的，精疲力尽的

参考例句：

• It was a long haul home and we arrived exhausted.搬运回家的这段路程特别长，到家时我们已筋疲力尽。
• Jenny was exhausted by the hustle of city life.珍妮被城市生活的忙乱弄得筋疲力尽。

31 exertion   

n.尽力，努力

参考例句：

• We were sweating profusely from the exertion of moving the furniture.我们搬动家具大费气力，累得大汗淋漓。
• She was hot and breathless from the exertion of cycling uphill.由于用力骑车爬坡，她浑身发热。

32 exertions   

n.努力( exertion的名词复数 )；费力；（能力、权力等的）运用；行使

参考例句：

• As long as they lived, exertions would not be necessary to her. 只要他们活着，是不需要她吃苦的。 来自辞典例句
• She failed to unlock the safe in spite of all her exertions. 她虽然费尽力气，仍未能将那保险箱的锁打开。 来自辞典例句

33 scurvy   

adj.下流的，卑鄙的，无礼的；n.坏血病

参考例句：

• Vitamin C deficiency can ultimately lead to scurvy.缺乏维生素C最终能道致坏血病。
• That was a scurvy trick to play on an old lady.用那样的花招欺负一个老太太可真卑鄙。

34 lamentable   

adj.令人惋惜的，悔恨的

参考例句：

• This lamentable state of affairs lasted until 1947.这一令人遗憾的事态一直持续至1947年。
• His practice of inebriation was lamentable.他的酗酒常闹得别人束手无策。

35 musket   

n.滑膛枪

参考例句：

• I hunted with a musket two years ago.两年前我用滑膛枪打猎。
• So some seconds passed,till suddenly Joyce whipped up his musket and fired.又过了几秒钟，突然，乔伊斯端起枪来开了火。

36 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。

37 fissures   

n.狭长裂缝或裂隙( fissure的名词复数 )；裂伤；分歧；分裂v.裂开( fissure的第三人称单数 )

参考例句：

• Rising molten rock flows out on the ocean floor and caps the fissures, trapping the water. 上升熔岩流到海底并堵住了裂隙，结果把海水封在里面。 来自辞典例句
• The French have held two colloquia and an international symposium on rock fissures. 法国已经开了两次岩石裂缝方面的报告会和一个国际会议。 来自辞典例句

38 fissure   

n.裂缝；裂伤

参考例句：

• Though we all got out to examine the fissure,he remained in the car.我们纷纷下车察看那个大裂缝，他却呆在车上。
• Ground fissure is the main geological disaster in Xi'an city construction.地裂缝是西安市主要的工程地质灾害问题。

39 partially   

adv.部分地，从某些方面讲

参考例句：

• The door was partially concealed by the drapes.门有一部分被门帘遮住了。
• The police managed to restore calm and the curfew was partially lifted.警方设法恢复了平静，宵禁部分解除。

40 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。

41 extremity   

n.末端，尽头；尽力；终极；极度

参考例句：

• I hope you will help them in their extremity.我希望你能帮助在穷途末路的他们。
• What shall we do in this extremity?在这种极其困难的情况下我们该怎么办呢？

42 windings   

（道路、河流等）蜿蜒的，弯曲的( winding的名词复数 )； 缠绕( wind的现在分词 )； 卷绕； 转动（把手）

参考例句：

• The time harmonics can be considered as voltages of higher frequencies applied to the windings. 时间谐波可以看作是施加在绕组上的较高频率的电压。
• All the vales in their manifold windings shaded by the most delightful forests. 所有的幽谷，都笼罩在繁茂的垂枝下。

43 metallic   

adj.金属的；金属制的；含金属的；产金属的；像金属的

参考例句：

• A sharp metallic note coming from the outside frightened me.外面传来尖锐铿锵的声音吓了我一跳。
• He picked up a metallic ring last night.昨夜他捡了一个金属戒指。

44 interval   

n.间隔，间距；幕间休息，中场休息

参考例句：

• The interval between the two trees measures 40 feet.这两棵树的间隔是40英尺。
• There was a long interval before he anwsered the telephone.隔了好久他才回了电话。

45 regularity   

n.规律性，规则性；匀称，整齐

参考例句：

• The idea is to maintain the regularity of the heartbeat.问题就是要维持心跳的规律性。
• He exercised with a regularity that amazed us.他锻炼的规律程度令我们非常惊讶。

46 lateral   

adj.侧面的，旁边的

参考例句：

• An airfoil that controls lateral motion.能够控制横向飞行的机翼。
• Mr.Dawson walked into the court from a lateral door.道森先生从一个侧面的门走进法庭。

47 delineation   

n.记述；描写

参考例句：

• Biography must to some extent delineate characters.传记必须在一定程度上描绘人物。
• Delineation of channels is the first step of geologic evaluation.勾划河道的轮廓是地质解译的第一步。

48 memoranda   

n. 备忘录, 便条 名词memorandum的复数形式

参考例句：

• There were memoranda, minutes of meetings, officialflies, notes of verbal di scussions. 有备忘录，会议记录，官方档案，口头讨论的手记。
• Now it was difficult to get him to address memoranda. 而现在，要他批阅备忘录都很困难。

49 fig   

n.无花果(树)

参考例句：

• The doctor finished the fig he had been eating and selected another.这位医生吃完了嘴里的无花果，又挑了一个。
• You can't find a person who doesn't know fig in the United States.你找不到任何一个在美国的人不知道无花果的。

50 minor   

adj.较小(少)的，较次要的；n.辅修学科；vi.辅修

参考例句：

• The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
• I gave him a minor share of my wealth.我把小部分财产给了他。

51 gulf   

n.海湾；深渊，鸿沟；分歧，隔阂

参考例句：

• The gulf between the two leaders cannot be bridged.两位领导人之间的鸿沟难以跨越。
• There is a gulf between the two cities.这两座城市间有个海湾。

52 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。

53 vigor   

n.活力，精力，元气

参考例句：

• The choir sang the words out with great vigor.合唱团以极大的热情唱出了歌词。
• She didn't want to be reminded of her beauty or her former vigor.现在，她不愿人们提起她昔日的美丽和以前的精力充沛。

54 impeded   

阻碍，妨碍，阻止( impede的过去式和过去分词 )

参考例句：

• Work on the building was impeded by severe weather. 楼房的施工因天气恶劣而停了下来。
• He was impeded in his work. 他的工作受阻。

55 persevere   

v.坚持，坚忍，不屈不挠

参考例句：

• They are determined to persevere in the fight.他们决心坚持战斗。
• It is strength of character enabled him to persevere.他那坚强的性格使他能够坚持不懈。

56 proceeding   

n.行动，进行，(pl.)会议录，学报

参考例句：

• This train is now proceeding from Paris to London.这次列车从巴黎开往伦敦。
• The work is proceeding briskly.工作很有生气地进展着。

57 aperture   

n.孔，隙，窄的缺口

参考例句：

• The only light came through a narrow aperture.仅有的光亮来自一个小孔。
• We saw light through a small aperture in the wall.我们透过墙上的小孔看到了亮光。

58 chamber   

n.房间，寝室；会议厅；议院；会所

参考例句：

• For many,the dentist's surgery remains a torture chamber.对许多人来说，牙医的治疗室一直是间受刑室。
• The chamber was ablaze with light.会议厅里灯火辉煌。

59 indentures   

vt.以契约束缚（indenture的第三人称单数形式）

参考例句：

• Occasionally a girl of intelligence andwould insist on the fulfilled of the terms of her indentures. 偶尔也有个把聪明、倔强的姑娘坚决要求履行合同上的规定。 来自互联网

60 intentional   

adj.故意的，有意（识）的

参考例句：

• Let me assure you that it was not intentional.我向你保证那不是故意的。
• His insult was intentional.他的侮辱是有意的。

61 standing   

n.持续，地位；adj.永久的，不动的，直立的，不流动的

参考例句：

• After the earthquake only a few houses were left standing.地震过后只有几幢房屋还立着。
• They're standing out against any change in the law.他们坚决反对对法律做任何修改。

62 erect   

n./v.树立，建立，使竖立；adj.直立的，垂直的

参考例句：

• She held her head erect and her back straight.她昂着头，把背挺得笔直。
• Soldiers are trained to stand erect.士兵们训练站得笔直。

63 alphabetical   

adj.字母（表）的，依字母顺序的

参考例句：

• Please arrange these books in alphabetical order.请把这些书按字母顺序整理一下。
• There is no need to maintain a strict alphabetical sequence.不必保持严格的字顺。

64 flakes   

小薄片( flake的名词复数 )； （尤指）碎片； 雪花； 古怪的人

参考例句：

• It's snowing in great flakes. 天下着鹅毛大雪。
• It is snowing in great flakes. 正值大雪纷飞。

65 caverns   

大山洞，大洞穴( cavern的名词复数 )

参考例句：

• Within were dark caverns; what was inside them, no one could see. 里面是一个黑洞，这里面有什么东西，谁也望不见。 来自汉英文学 - 家（1-26） - 家（1-26）
• UNDERGROUND Under water grottos, caverns Filled with apes That eat figs. 在水帘洞里，挤满了猿争吃无花果。

66 triangular   

adj.三角（形）的，三者间的

参考例句：

• It's more or less triangular plot of land.这块地略成三角形。
• One particular triangular relationship became the model of Simone's first novel.一段特殊的三角关系成了西蒙娜第一本小说的原型。

67 outlet   

n.出口/路；销路；批发商店；通风口；发泄

参考例句：

• The outlet of a water pipe was blocked.水管的出水口堵住了。
• Running is a good outlet for his energy.跑步是他发泄过剩精力的好方法。

68 circumference   

n.圆周，周长，圆周线

参考例句：

• It's a mile round the circumference of the field.运动场周长一英里。
• The diameter and the circumference of a circle correlate.圆的直径与圆周有相互关系。