什么时候你可以和赛车一样快？

When do you go as fast as a racing car?

youdao

如果有其他特别重要的事情分散了你的注意力，向会议推动者发送一条即时消息，以告诉他们你需要暂时分散下注意力，说明这样做的原因，并让他们知道什么时候你可以重新回到会议中。

If something of critical importance does call your attention away, send the facilitator an im so they know your attention is elsewhere, why it is, and let them know when the distraction is gone.

youdao

你可以待到什么时候？

Until when can you stay?

《牛津词典》

You could see, for example, when it's expressed in a cancer cell, and where it's expressed.

你可以看到，比如说，它什么时候在癌细胞里被表达，在哪里被表达。

麻省理工公开课 - 化学原理课程节选

You can say like, if you are trying to describe something, you can say like,

你可以这样说，当你想描述什么东西的时候，像这样，

紧张是学英语的敌人 - SpeakingMax英语口语达人

So you've got to understand when it's okay and when it's not okay.

你必须得知道,什么时候可以,什么时候不可以

耶鲁公开课 - 基础物理课程节选