Monopoly profit
[经] 垄断利润
🧩 词语组成解析
🗣️ 情景例句
Have some iced tea.
喝点冰茶吧。
Just lately I've caugth up to my works.
最近我的工作忙死了。
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。