Ecouvillon
[医] 擦洗刷
🗣️ 情景例句
But I do need some publicity
但我需要一些宣传，
I'm calling from a public phone.
我打的是公用电话。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。