新概念英语第四册Lesson 23 Bird flight 课件

Lesson 23 Bird flight 鸟的飞行方法 ① No two sorts of birds practise quite the same sort of flight; the varieties are infinite; but two classes may be roughly seen. The possibilities are infinite. Mankind has infinite ingenuity. class / category / type / sort fall into .... categories be divided into .... classes 人类有无穷无尽的创造力。 ② Any ship that crosses the Pacific is accompanied for many days by the smaller albatross, which may keep company with the vessel for an hour without visible or more than occasional movement of wing. albatross n. 信天翁 an albatross around one’s neck The scandal is an albatross around the president’s neck. an albatross around one’s neck 让某人头疼/担忧的事情 lame duck 不成功的人或事，美国政治的跛脚鸭（即将届满卸任者） sitting duck 活靶子；易被击中的目标；易受攻击的对象 carrier pigeon 信鸽 pigeon-toed 内八字的，足内翻的 ③ The currents of air that the walls of the ship direct upwards, as well as in the line of its course, are enough to give the great bird with its immense wings sufficient sustenance and progress. sustenance n. 食物，营养，生计；持续，维持 sustain v. sustainable retain attain obtain maintain detain contain be directed at 针对 All the criticism was directed at her. direct adv. ④ The albatross is the king of the gliders, the class of fliers which harness the air to their purpose, but must yield to its opposition. harness n. 马具； v. 利用（自然力） There is a great deal of interest in harnessing wind and waves as new sources of power. In order to reduce the fossil fuels, we have now begun to harness energy from the wind and tides. We aim to do better at harnessing the skills and talents of our employees table a proposal / bill Would you like to chair tomorrow’s meeting? implement a plan/ policy gear sth. to/towards sth./sb. He geared his speech to a conservative audience. gear sth. to/towards sth. 使……适合于…… ⑤ In the contrary school, the duck is supreme. ⑥ It comes nearer to the engines with which man has 'conquered' the air, as he boasts. ⑦ Duck, and like them the pigeons, are endowed with steel-like muscles, that are a goo