Definition
Not considered socially acceptable or appropriate behavior.
不合宜、不得體
Wearing sportswear to a formal event is not the done thing.
在正式場合穿著運動服是不合宜的。
Answering personal calls during a meeting is not the done thing.
在會議中接聽私人電話是不恰當的。
Visiting someone's home without invitation is not the done thing.
未經邀請就拜訪別人家是不禮貌的。