Crustation
成壳作用
🗣️ 情景例句
He studied harder to improve his English.
他更加努力提高英语水平。
As the wind blows, you must set your sail.
趁风启帆。
I'm afraid that he can't,Mr. Croft.Can't you wait till this afternoon?
恐怕不能，克罗夫特先生。您就不能等到今天下午吗？