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Words in the News:Flies move 'like fighter jets'

2014-04-12 14:35[BBC] 来源: 浏览: 次 评论:
The research team were astonished by the speed with which fruit flies are able to change direction in mid-flight when faced with a threat.
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Like fighter aircraft, they pitch, roll and regain stability, and all in five-thousandths of a second. High speed video shows that this complex and abrupt manoeuvre involves very subtle changes in the insect's wing beat that are barely discernible.

It's a mystery how a creature with a brain the size of a grain of salt is able to process visual information and translate it into precise muscular movements so quickly and precisely. [www.enbus.cn 免费英语学习网站]

But according to the research team, it does help to explain why flies are so difficult to swat.



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