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Insect acrobatics 昆虫的绝活 Flipping roaches 非常蟑螂 How cockroaches vanish 蟑螂是怎么消失不见的? ANYONE who has tried to swat a cockroach will know those insects strange ability, in theheat of pursuit, to disappear. 只要打过蟑螂的都知道它们特殊的本领往往在追赶最激烈的时候突然消失不见了。 Robert Full and his colleagues at the University of California, Berkeley, have now worked outhow they do thisand taught a miniature robot to copy the feat. 加州大学伯克利分校的Robert Full和他的同事现在已明白它们是怎么做到的，并用一个微型机器人模拟了这个过程。 Dr Full had been using high-speed photography to study how cockroaches employ theirantennae to sense and cross gaps. Full博士运用了高速摄影技术来研究蟑螂是如何使触须去感知和穿过缝隙。 When the researchers made the gaps wider, 当研究者把缝隙扩宽， they saw the animals flipping backunderneath the ledge at the edge of the gap, rather than jumping across the empty space. 发现蟑螂直接在缝隙边缘翻转下去，而不是跳过缝隙， | 
