Recentering
再定中心
🗣️ 情景例句
Yup. Forty-three years.
是的。四十三年。
Here you are , please check.
给你，请查一下。
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。