我们必须停止打仗，停止战争。

We have to stop fighting, we have to stop war.

youdao

如果交通灯变为红灯， 车辆必须停止。

If the traffic lights are red, the traffic must stop.

youdao

他们必须停止一切挑衅。

They must immediately cease all their provocations.

《新英汉大辞典》

Stop when we ask you to stop out of courtesy to your classmates.

当我要求你停止你向你同学献殷勤时,你必须停止。

麻省理工公开课 - 固态化学导论课程节选

I need that sanity check saying at some point, you have to stop.

在一些地方需要做那样的合法性检查，告诉你必须停止操作。

哈佛公开课 - 计算机科学课程节选