the done thing

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

得体的做法, 应做之事

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裤不是得体的做法
He always knows exactly what the done thing is in any social situation.
他总是清楚在任何社交场合中什么是得体的做法