磨难会有的，但我们必须下定决心继续做下去。

There is going to be hardship, but we have to grit our teeth and get on with it.

《柯林斯英汉双解大词典》

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.

youdao

让她高兴起来很难，但我们必须帮助她。

It's difficult for us to cheer her up but we must help her.

youdao

You know, yes, yes, you know, we care about you, but you have to subsume your interest, your personal interest.

是的，是的，你懂的，我们关注你，但你必须让个人利益服从集体利益。

普林斯顿公开课 - 人性课程节选

We know it has to big anyway, since we can extract heat from it without changing the temperature.

我们知道它必须很大，因为我们得从中提取热量,但不改变它的温度。

麻省理工公开课 - 热力学与动力学课程节选

But first we need to establish a few things about the occasion for this piece and about the genre, the literary genre of the mask in general.

但首先我们必须建立一些,关于此作品与流派，一般文学体裁《面具》的场合。

耶鲁公开课 - 弥尔顿课程节选