It's a comfort to know that she is safe.

知道她安然无恙是令人宽慰的事。

《牛津词典》

Every child needs to know that he is loved.

每个孩子都需要知道自己是有人爱的。

《牛津词典》

I'm intrigued to know what you thought of the movie.

我很想知道你对这部电影的看法。

《牛津词典》

She says she researches her family history because she wants to know where she came from, who her ancestors were.

VOA: special.2010.06.28

Now, we are very gentle in this course with respect to knowing integrals, but this is one you have to know.

这门课对积分,的要求并不高，但这个积分你们必须会算。

麻省理工公开课 - 热力学与动力学课程节选

and to know your weak spots and know like... just practice stuff that you're not very good at.

知道自己的弱点在哪里，知道…就练习不太擅长的那些。

收到了录取通知书 - SpeakingMax英语口语达人

You no longer need to know HTML, the computer publishing language, to build a basic site.

FORBES: Better Late Than Never

Interaction of a slow-paced kind: if you really wish to know a country, walk it.

BBC: Northern Spain's Camino de Santiago 2010

If they are spending time on something, they want to know it s well used.

FORBES: Retirement With A Purpose