You must not know that I liked you so much.

你一定不知道，我曾那样毫无指望的喜欢你。

youdao

You must not know but I do not have to tell you!

你不应该知道，但是我不告诉你！

youdao

If you must move, don't follow a stream unless you know it, and in that case, you are not lost.

如果你非要走动的话，别顺着溪流走，除非你对它很熟悉。但是如果你很熟悉，那你就不会迷路了。

youdao

You must know the Earth is not precisely inertial.

你们都知道,地球不是严格意义上的惯性参考系

耶鲁公开课 - 基础物理课程节选

If you take such assertions seriously, then you must not know much about the history of U.S. defense downturns.

FORBES: Defense Plans Will Change, So Don't Bank on Obama Blueprint

But you must not indicate that you are in the know.

NEWYORKER: Pumpkin Head

So I support Mr. Delahunt's motion, and I hope that in the interest of fairness -- because you know this proceeding must not only be fair but must be seen to be fair.

CNN: Transcript: Judiciary Committee impeachment hearing