lay down the law
US /leɪ daʊn ðə lɔː/
UK /leɪ daʊn ðə lɔː/
1.
立下規矩, 發號施令
to tell people what they must do, without caring about their opinions
:
•
The new manager immediately laid down the law about punctuality.
新經理立即立下規矩，要求大家準時。
•
My parents always lay down the law when it comes to my curfew.
我的父母在我的宵禁問題上總是立下規矩。