社交媒体当然可以用来逃避日常琐事，但我们必须警惕其对人整体心理健康的负面影响，比如上瘾。

Social media can certainly be an escape from the daily grind, but we must be cautioned against the negative effects, such as addiction, on a person's overall psychological well-being.

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我们必须做的是为普什图人提供保护和一个让他们能够送孩子上学并接受教育的环境。

What we must do is to provide the Pashtuns with protection and an environment in which they can send their children to school and educate them.

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在证实一个人有罪之前，我们必须假定其无辜。

We must presume innocence until we have proof of guilt.

《牛津词典》

We can see how whether it's the same person or not has to turn on the relations between the stages.

我们可以看到，是否为同一人,必须依赖于人在两个时期的关系。

耶鲁公开课 - 死亡课程节选

We have to bring the best people in, edit the best people in so we have a good cast of characters, and edit away any negative elements.

我们必须招揽最优秀的人，吸纳最优秀的人,所以我们有了强大的阵容，剪辑走了负面元素。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

So the other possible deviation we have to consider, is a deviation of the form of one of these guys dropping out.

那么另外一个我们必须要考虑的偏差,是她们俩有一个人退出选举

耶鲁公开课 - 博弈论课程节选