the done thing

US /ðə dʌn θɪŋ/
UK /ðə dʌn θɪŋ/
"the done thing" picture
1.

得體的做法, 應做之事

socially acceptable or expected behavior

:
It's not the done thing to wear jeans to a formal dinner.
在正式晚宴上穿牛仔褲不是得體的做法
He always knows exactly what the done thing is in any social situation.
他總是清楚在任何社交場合中什麼是得體的做法