蝙蝠也会捕鱼：这听起来有些不可思议，它们的回波定位无法渗透水，它们是如何捕鱼的呢？原来蝙蝠的回波定位非常灵敏，可以探测到水下鱼儿活动产生的水面涟漪，虽然蝙蝠看不到鱼，但是依据水面涟漪能够捕鱼，此外它们还会捕食青蛙。
No， bats are not blind. Bats have small eyes with very sensitive vision， which helps them see in conditions we might consider pitch black. They don't have the sharp and colorful vision humans have， but they don't need that.10. 黑洞是个洞?
