它们发出超声波，然后这些声音从昆虫的身上反弹回来，以回音的方式返回给蝙蝠，于是蝙蝠就能估算出昆虫的位置。

They make ultrasonic sounds. These sounds then bounce off insects and come back to the bats in the form of echoes. A bat can then calculate the position of an insect.

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它们发出超声波，然后这些声音从昆虫的身上反弹回来，以回音的方式返回给蝙蝠，于是蝙蝠就能估算出昆虫的位置。

They make ultrasonic sounds. These sounds then bounce off insects and come back to the bats in the form of echoes. A bat can then calculate the position of an insect.

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