Catactrophic
[计] 灾难性的
🗣️ 情景例句
I should be finished packing by then.
到那时候我应该已经整理好行李了。
A fool may give a wise man counsel.
愚者千虑，必有一得。
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。