十万个为什么·科学阅读30篇（6）
11 / 30
正在确认阅读权限…
How Do Bats Find Their Way in the Dark?
蝙蝠如何在黑暗中找到路？
-
Bats cannot see well in total darkness.蝙蝠在完全黑暗中视力很差。
-
They send out high-pitched sounds humans cannot hear.它们发出人类听不见的高音调声音。
-
These sounds bounce off walls, trees or insects.这些声音会从墙壁、树木或昆虫身上反弹回来。
-
Bats listen for echoes with large sensitive ears.蝙蝠用大而灵敏的耳朵倾听回声。
-
This system is called echolocation.这种系统称为回声定位。
-
It tells them size, shape and distance of objects.它能告诉蝙蝠物体的大小、形状和距离。
-
Some bats catch flying bugs mid-air using echoes.有些蝙蝠靠回声在空中捕捉飞虫。
-
Blind people also learn echo skills to move safely.盲人也能学会利用回声安全行动。