Why can bats fly so well in the dark?
本文作者： 21ST
为什么蝙蝠晚上飞行不撞到墙？Bats use their ears to find their way in the dark. They make sounds (发出声音) as they fly. When the sounds hit5 things, they bounce back (反弹回来) to the bat’s ears. Bats then fly away from those hard things. |  |
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