This is because you don't know how seriously you are hurt.

这是因为你不知道自己伤得有多严重。

youdao

You can't ] because you don't know how to speak.

你不能说,因为你不知道该怎么说，她说道。

youdao

Or do you do it because you don't know what else to do?

还是因为你不知道除此之外还能干什么？

youdao

And one day you want to go to the cemetery or something, you can't do it because you don't know where they are.

VOA: special.2010.02.01

Because you don't know how much more time you've got-- You can make a guess based on statistics, but as we saw, there's wild unpredictability.

因为你不知道你剩下多少时间-,你可以根据数据进行猜测，但是我们都知道，不可预见性太难把握。

耶鲁公开课 - 死亡课程节选

because you don't know what they'll do with the money.

因为你不知道他们会拿钱来做什么。

不做善事的理由 - SpeakingMax英语口语达人

You just don't know in the Derby because you don't know who's going to get into racing trouble.

NPR: Louisville Coach Chasing Derby Win As A Co-Owner

"I think that (retirement) was the more difficult adjustment because you don't know what to do, " he said.

CNN: The end game: How sports stars battle through retirement

"Is it really rape because you don't know if she wanted to or not, " the teenager says on the video.

CNN: Defense battles social media blizzard in Ohio rape case