Eardust
[医] 耳沙, 耳石
🗣️ 情景例句
And be a true member of the Stewart family.
也真正成了Stewart家庭中的一员。
The radio is out of order.
这收音机坏了。
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。