The bird suddenlystarted to flap its wings, although it couldn’t fly. The bird was just a littlebird.

那只鸟突然就开始拍打翅膀，那是一只幼鸟，尚不能飞行，有一个士兵把它收留作为宠物养着。

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The tiny aerial vehicle pictured here, made with carbon-fiber wings that flap 120 times per second, is the first insect-size robot to fly.

这个微型航拍工每秒可以扇动120下的碳素纤维翅膀，是第一个昆虫大小的飞行机器人。

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I flap the flies away but soon they fly back.

我把苍蝇赶走，但一会儿又飞回来了。

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