be somebody’s lookout
成語所屬單字lookout
be somebody’s lookout — 慣用語
1. It means that someone's action is their own responsibility, even if it seems unw
1.慣用語
釋義
是某人的事
It means that someone's action is their own responsibility, even if it seems unwise.
例句
If Tom wants to quit his job, that's his lookout.
She's spending all her savings on a car? That's her lookout.