It's an act of free will. Somebody's leaving.

这是自由意志的选择，有人会离开。

麻省理工公开课 - 固态化学导论课程节选

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

When he is gone from Moscow and then St. Petersburg, there was always this tendency to have these sort of cabales to get together and sort of plot.

当他离开莫斯科和圣彼得堡外出时,就会有人秘密集会,结党营私,秘谋造反

耶鲁公开课 - 欧洲文明课程节选

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