Clappet
[建] 止回阀
🗣️ 情景例句
I'm a foreign student, and I'd like to make some new friends.
我是个外国学生， 我想交几个新朋友。
It is easy to be wise after the event.
当事后诸葛亮容易。
Tell him that; he'll be interested.
告诉他这事，他会感兴趣的。