新概念英语第四册Lesson 23 Bird flight

Lesson 23
Bird flight
鸟的飞行方法

First listen and then answer the following question.
听录音，然后回答以下问题。

What are the two main types of bird flight described by the author?

No two sorts of birds practise quite the same sort of flight; the varieties are infinite; but two classes may be roughly seen. Any shi that crosses the Pacific is accompanied for many days by the smaller albatross, Which may keep company with the vessel¹ for an hour without visible or more than occasional movement of wing. The currents of air that the walls of the ship direct upwards², as well as in the line of its course, are enough to give the great bird with its immense wings sufficient sustenance³ and progress. The albatross is the king of the gliders⁵, the class of fliers which harness the air to their purpose, but must yield to its opposition⁶. In the contrary school, the duck is supreme⁷. It comes nearer to the engines with which man has 'conquered' the air, as he boasts. Duck, and like them the pigeons, are endowed with such-like muscles, that are a good part of the weight of the bird, and these will ply⁸ the short wings with such irresistible⁹ power that they can bore for long distances through an opposing gale¹⁰ before exhaustion¹¹ follows. Their humbler followers¹², such as partridges, have a like power of strong propulsion, but soon tire. You may pick them up in utter exhaustion, if wind over the sea has driven them to a long journey. The swallow shares the virtues¹³ of both schools in highest measure. It tires not, nor does it boast of its power; but belongs to the air, travelling it may be six thousand miles to and from its northern nesting home, feeding its flown young as it flies, and slipping through we no longer take omens¹⁵ from their flight on this side and that; and even the most superstitious¹⁶ villagers no longer take off their hats to the magpie¹⁷ and wish it good-morning.
WILLIAM BEACH THOMAS A Countryman's Creed¹⁸

New words and expressions 生词和短语
albatross
n. 信天翁
sustenance
n. 支撑力
glider⁴
n. 滑翔者
harness
v. 利用
endow
v. 赋有
ply
v. 不断地供给
gale
n. 大风
partridge
n. 鹧鸪
like
adj. 类似的
propulsion
n. 推进力
utter
adj. 完全的
slip
v. 滑行
adverse¹⁹
adj. 逆的，相反的
omen¹⁴
n. 预兆

参考译文
没有任何两种鸟的飞行方式是相同的。鸟的飞行方式千差万别，但大体上可分为两类。任何一艘横度太平洋的轮船都会有一种小信天翁伴随飞行许多天。它们随船飞行一小时也难得见其扇动一下翅膀。沿船体的上升的气流和沿航线向前的气流给这种巨翼大鸟以足够的浮力和推力。信天翁是滑翔飞行的鸟类之王，它能自如地驾驭空气，但必须顺气流飞行。与滑翔鸟相对的另一类鸟中，数野鸭本领最高。它更近乎于人类自夸的“征服”了空气的发动机。野鸭及它们相似的鸽子有天赋的钢铁般的肌肉，占了体重的很大一部分。这些肌肉以巨大的力量扇动短小的翅膀，使这类鸟能顶着大风飞行很远的路才会疲劳。次于野鸭和鸽子的鸟，如鹧鸪，有相似的巨大推动力，但很快会疲劳。如果海风驱使它们飞行很长距离，你可以捡到一些因筋疲力尽而摔下来的鹧鸪。燕子充分兼有这两类鸟的长处，它既不疲劳，也不炫耀自己的飞翔力；在空中十分自如，可以飞行6，000英里，可以飞往北方做窝的老家，再从老家飞回；一边飞一边喂养会飞的雏燕，甚至在顶风时也能在气流中滑翔，似乎气流在帮它前进。这些鸟对我们是有益的，虽然我们不再从它们的飞翔姿态来占卜吉凶，连最迷信的村民也不再对喜鹊脱帽行礼，祝它早安了。

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1 vessel   

n.船舶；容器，器皿；管，导管，血管

参考例句：

• The vessel is fully loaded with cargo for Shanghai.这艘船满载货物驶往上海。
• You should put the water into a vessel.你应该把水装入容器中。

2 upwards   

adv.向上，在更高处...以上

参考例句：

• The trend of prices is still upwards.物价的趋向是仍在上涨。
• The smoke rose straight upwards.烟一直向上升。

3 sustenance   

n.食物，粮食；生活资料；生计

参考例句：

• We derive our sustenance from the land.我们从土地获取食物。
• The urban homeless are often in desperate need of sustenance.城市里无家可归的人极其需要食物来维持生命。

4 glider   

n.滑翔机；滑翔导弹

参考例句：

• The glider was soaring above the valley.那架滑翔机在山谷上空滑翔。
• The pilot managed to land the glider on a safe place.那个驾驶员设法让滑翔机着陆到一个安全的地方。

5 gliders   

n.滑翔机( glider的名词复数 )

参考例句：

• The albatross is the king of gliders. 信天翁是滑翔鸟类之王。 来自《用法词典》
• For three summers, may bested and improved their gliders. 他们花了三个夏天不断地测试、改进。 来自英汉非文学 - 科学史

6 opposition   

n.反对，敌对

参考例句：

• The party leader is facing opposition in his own backyard.该党领袖在自己的党內遇到了反对。
• The police tried to break down the prisoner's opposition.警察设法制住了那个囚犯的反抗。

7 supreme   

adj.极度的，最重要的；至高的，最高的

参考例句：

• It was the supreme moment in his life.那是他一生中最重要的时刻。
• He handed up the indictment to the supreme court.他把起诉书送交最高法院。

8 ply   

v.(搬运工等)等候顾客，弯曲

参考例句：

• Taxis licensed to ply for hire at the railway station.许可计程车在火车站候客。
• Ferryboats ply across the English Channel.渡船定期往返于英吉利海峡。

9 irresistible   

adj.非常诱人的，无法拒绝的，无法抗拒的

参考例句：

• The wheel of history rolls forward with an irresistible force.历史车轮滚滚向前，势不可挡。
• She saw an irresistible skirt in the store window.她看见商店的橱窗里有一条叫人着迷的裙子。

10 gale   

n.大风，强风，一阵闹声（尤指笑声等）

参考例句：

• We got our roof blown off in the gale last night.昨夜的大风把我们的房顶给掀掉了。
• According to the weather forecast,there will be a gale tomorrow.据气象台预报，明天有大风。

11 exhaustion   

n.耗尽枯竭，疲惫，筋疲力尽，竭尽，详尽无遗的论述

参考例句：

• She slept the sleep of exhaustion.她因疲劳而酣睡。
• His exhaustion was obvious when he fell asleep standing.他站着睡着了，显然是太累了。

12 followers   

追随者( follower的名词复数 )； 用户； 契据的附面； 从动件

参考例句：

• the followers of Mahatma Gandhi 圣雄甘地的拥护者
• The reformer soon gathered a band of followers round him. 改革者很快就获得一群追随者支持他。

13 virtues   

美德( virtue的名词复数 )； 德行； 优点； 长处

参考例句：

• Doctors often extol the virtues of eating less fat. 医生常常宣扬少吃脂肪的好处。
• She delivered a homily on the virtues of family life. 她进行了一场家庭生活美德方面的说教。

14 omen   

n.征兆，预兆；vt.预示

参考例句：

• The superstitious regard it as a bad omen.迷信的人认为那是一种恶兆。
• Could this at last be a good omen for peace?这是否终于可以视作和平的吉兆了？

15 omens   

n.前兆，预兆( omen的名词复数 )

参考例句：

• The omens for the game are still not propitious. 这场比赛仍不被看好。 来自辞典例句
• Such omens betide no good. 这种征兆预示情况不妙。 来自辞典例句

16 superstitious   

adj.迷信的

参考例句：

• They aim to deliver the people who are in bondage to superstitious belief.他们的目的在于解脱那些受迷信束缚的人。
• These superstitious practices should be abolished as soon as possible.这些迷信做法应尽早取消。

17 magpie   

n.喜欢收藏物品的人，喜鹊，饶舌者

参考例句：

• Now and then a magpie would call.不时有喜鹊的叫声。
• This young man is really a magpie.这个年轻人真是饶舌。

18 creed   

n.信条；信念，纲领

参考例句：

• They offended against every article of his creed.他们触犯了他的每一条戒律。
• Our creed has always been that business is business.我们的信条一直是公私分明。

19 adverse   

adj.不利的；有害的；敌对的，不友好的

参考例句：

• He is adverse to going abroad.他反对出国。
• The improper use of medicine could lead to severe adverse reactions.用药不当会产生严重的不良反应。