Scpo
abbr. 一级军士长（Senior Chief Petty Officer, 美国海军军衔）
🗣️ 情景例句
Are you all right?
你还好吗？
There is a small choice in rotten apples.
朽木不可雕。
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。