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.

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。

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But we must be clever in the use.

但是我们必须学会灵活地使用它。

youdao

But we must be sure we can get those supplies soon.

但是我们一定要在这几天内确定是否能获得货源。

youdao

But we must be sure we have taken the measures to diminish the risks to the maximum."

VOA: standard.2010.03.01

But since we've got free will, we must be something more than a merely physical object.

但由于我们拥有自由意志,我们必定不只是纯粹的物理对象

耶鲁公开课 - 死亡课程节选

The new prince, as we've seen, must know how to use religion but needs to learn how not to be used by religion, must not become a dupe of the religious.

正如我们所看到的，这种新型君主必须知道,如何去利用宗教而不是被宗教所利用,必须避免成为受宗教愚弄摆布的对象。

耶鲁公开课 - 政治哲学导论课程节选

But we must be wary of concluding that we should focus our energy on technology rather than people.

CNN: Computers can't replace real teachers

We'll have more pressure on the next few games but we must be strong and have good control of our emotions.

BBC: Jose Mourinho proud of 'perfect' Inter show at Chelsea

Opportunities to further our intellectual base and professional experiences are always around us, but we must be curious, proactive, and ready to engage.

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