Saami
运动用枪械弹药制造厂商协会
🗣️ 情景例句
Our boss doesn't give us any slack
我们老板不让我们有一丝松懈。
You cannot clap with one hand.
孤掌难鸣。
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。