Laurvikite
歪碱正长岩
🗣️ 情景例句
I can't tell you how sorry I am.
我真的是很抱歉。
Happy is he that is happy in childhood.
童年时代快乐的人是幸福的。
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。