🗣️ 情景例句
I don't know what I would do without you.
我真不知道没有你们我怎么办。
I did three loads of wash today.
我今天洗了三次衣服。
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。