Stop crying.别哭了。

I'm trying to stop smoking.我正在设法戒烟。

We all stopped talking.我们都不说话了。

He appeared to have stopped breathing.他似乎已经停止了呼吸。

He can't stop thinking about it.他没办法不再想这件事。

You should know when to stop asking questions.你应该知道什么时候停止问问题。