Mooreite
[矿]锰镁锌矾
🗣️ 情景例句
I'll be right back.
我马上就回来。
I'm impressed by your approach to business.
你们经营业务的方法给我留下了很深的印象。
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。