2022年【新概念英语第四册第29课-The,hovercraft】新概念英语第四册.doc

《2022年【新概念英语第四册第29课-The,hovercraft】新概念英语第四册.doc》由会员分享，可在线阅读，更多相关《2022年【新概念英语第四册第29课-The,hovercraft】新概念英语第四册.doc（4页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、2022年【新概念英语第四册第29课:The,hovercraft】新概念英语第四册First listen and then answer the following question. 听录音，然后回答以下问题。 What is a hovercraft riding on when it is in motion? Many strange new means of transport have been developed in our century, the strangest of them being perhaps the hovercraft. In 1953, a for

2、mer electronics engineer in his fifties, Christopher Cockerell, who had turned to boat-building on the Norfolk Broads, suggested an idea on which he had been working for many years to the British Government and industrial circles. It was the idea of supporting a craft on a pad , or cushion, of low-p

3、ressure air, ringed with a curtain of higher pressure air. Ever since, people have had difficulty in deciding whether the craft should be ranged among ships, planes, or land vehicles - for it is something in between a boat and an aircraft. As a shipbuilder, Cockerell was trying to find a solution to

4、 the problem of the wave resistance which wastes a good deal of a surface ship s power and limits its speed. His answer was to lift the vessel out of the water by a great number of ring-shaped air jets on the bottom of the craft. It flies , therefore, but it cannot fly higher - its action depends on

5、 the surface, water or ground, over which it rides. 本世纪已研制出许多新奇的交通工具，其中最新奇的要数气垫船了。1953年，有一位50多岁名叫克里斯托弗.科克雷的原电子工程师，改行在诺福克郡的湖泊 地区从事造船业，他向英国政府和工业界提出了他研究多年的一项计划。他的设想是：用一个低压空气或软垫来支撑船体，软垫周围用高压空气环绕。自那以后，人 们很难决定是否应该将这种运载工具列为轮船、飞机，或是陆上交通工具，因为它是介于船和飞机之间。作为一个船舶技师，科克雷尔在寻找解决波浪阻力的方法， 因为波浪阻力浪费掉了船在水面行驶的大量动力，从而限制了船的

6、速度。他的解决办法是把船体提离水面，让船在一个气垫上行驶，气垫只有一两英尺厚。船底装上 大量环状喷气嘴以实现这一目的。这样，船就能飞了，但飞不高。它的飞行限决于它所悬浮的水面或地面。 The first tests on the Solent in 1959 caused a sensation. The hovercraft travelled first over the water, then mounted the beach, climbed up the dunes, and sat down on a road. Later it crossed the Channel, rid

7、ing smoothly over the waves, which presented no problem. 1959年，在苏伦特海峡进行的首次试航引起了轰动，气垫船先是在水面上行驶，后又登上海岸，爬上沙丘，最后停在路上。后来气垫船跨越英吉利海峡，平衡地在波浪上方行驶，波浪不再产生阻力。 Since that time, various types of hovercraft have appeared and taken up regular service. The hovercraft is particularly useful in large areas with poor c

8、ommunications such as Africa or Australia; it can become a flying fruit-bowl , carrying bananas from the plantations to the ports; giant hovercraft liners could span the Atlantic; and the railway of the future may well be the hovertrain , riding on its air cushion over a single rail, which it never

9、touches, at speeds up to 300 m.p.h. - the possibilities appear unlimited. 从那以后，各种各样的气垫船出现了，并开始了定期航行服务。气垫船在非洲、澳大利亚等交通不发达地区特别有用。它能成为 飞行水果盘子 ，把香蕉从种植园 动到港口。大型的气垫班轮或许能跨越大西洋。未来的火车或许能成为 气垫火车 ，靠气垫在单轨上行驶而不接触轨道，时速可达每小时300英里。气垫船的前 途是不可限量的。 New words and expressions 生词和短语 hovercraft n. 气垫船 Norfolk Broads n. 诺福克郡的湖泊地区 cushion n. 座垫 ring v. 围 Solent n. （英国的）苏伦特海峡 sensation n. 轰动 dune n. 沙丘 plantation n. 种植园 hovertrain n. 气垫火车 Notes on the text课文注释 1 the strangest of them being perhaps the hovercraft, 这是现在分词being的独立主格结构。 2 in between,介乎.之间，这是一种组合介词。 3 a surface ship,水面船只。 4 may well be ,很可能。第 4 页 共 4 页