Export inspection system
[经] 出口检验制度
🧩 词语组成解析
🗣️ 情景例句
No pain, no gain.
只有付出，才有收获！（不劳则无获！）
No man loves his fetters be they made of gold.
即使脚镣黄金铸，无人爱上这刑具。
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。