I think it must be you.

谅必是你。

《新英汉大辞典》

Whatever system you choose, it must be run in properly.

不管你选择什么样的体系，都必须经过适当的磨合。

《牛津词典》

It must be an allergy. Do you have any aspirin?

这肯定是过敏了。你有阿司匹林吗？

youdao

But you must be careful. It is easy to get lost in the waves of moving sand especially during sandstorms.

VOA: special.2010.01.04

If you want to say,no,no,no,those memories are illusions, it must be because you don't think he's really Napoleon.

假如你说，不，那些记忆都是错觉，那是因为你不认为他是真的拿破仑。

耶鲁公开课 - 死亡课程节选

Ok I've never even seen it, so that's good -- you must be better travelled than I.

有一部分，我从来没见过这是什么,很好，你们旅游的比我多哈。

麻省理工公开课 - 化学原理课程节选

It reads so easily, you think it must be easy to write.

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If you recognised the pattern, and you love it, then you must be a trader.

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It must be as far as you can get from the controlled conditions scientists usually hanker after?

BBC: What do UK's military scientists do on the frontline?