They had to be home, and they had to stick to their plans, because you had no way of communicating with someone once you left for your destination.

VOA: special.2009.09.14

These people left the lab having learnt about themselves that they'll kill another person if someone tells them to, and as psychologists I don't think we have any right to do that to people.

这些电击者离开实验时发现,如果有人叫他们去杀人，他们真的会杀，作为心理学家,我们没权对他人做出这种行为。

耶鲁公开课 - 心理学导论课程节选

because someone turned the gas off and turned it back on and then left.

因为有人把瓦斯关了以后，又打开，忘记关上就离开了。

Make sure 课堂 - SpeakingMax英语口语达人

and I left my math notes in someone's car

而我却把自己的数学笔记落在谁的车里了。

Can 实战 - SpeakingMax英语口语达人

You feel like someone's being left out.

你感觉有谁被落下了。

Is there any 课堂 - SpeakingMax英语口语达人