John told him to be careful next time, or he had to leave.

约翰告诉他下次要小心，否则他就得离开。

youdao

It would be corrupting discipline to leave him unpunished.

不惩治他会败坏风纪。

《新英汉大辞典》

It would be corrupting military discipline to leave him unpunished.

不惩治他会败坏军纪。

《新英汉大辞典》

He believed if he could only enter this kind of a hotel, he would be able to leave school, his teachers,and his ordinary, gray life behind him.forever.

VOA: special.2009.04.04

Speaking of the boss, it may be best to leave him off your list entirely, some etiquette experts say.

FORBES: Careers

It will be hard for him to leave all this and go back to Cardenas.

ECONOMIST: Send Elian home

"It would be lucrative for me to leave him, " she said.

BBC: Marlon King vows to overturn sex attack conviction