BBC news 阅读必备词汇学习：Transcript:

　　This contraption may not look very impressive...

　　But when the bicycle-powered helicopter defied gravity, it caused great excitement.

　　Its flight only lasted 64 seconds and reached an altitude of 3.3 metres. Though it was a greatachievement for the Canadian team, which spent 18 months designing the chopper.

　　They won a prize worth $250,000 from the American Helicopter Society.

　　The team hope to inspire the next generation of aviation pioneers.

　　Vocabulary:

　　contraption n. 老式又奇妙的装置

　　defied gravity 失重

　　altitude n. 高度

　　chopper n. 直升机

　　pioneers n. 先锋;拓荒者

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