P. cc.
[医] 周视凹面
🧩 词语组成解析
立方厘米
🗣️ 情景例句
but I have work to do.
但我有工作要做。
He warms too near that burns.
取暖太近火，会被火灼伤。
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。