I didn't know I'd have to make a speech—I just had to wing it.

我不知道还得讲话，只好想到什么就说点什么。

《牛津词典》

I want him back, but I just don't know how to go about it.

我希望他回来，可我就是不知道怎么去做这件事。

《柯林斯英汉双解大词典》

I know you did it—I just want to know why.

我知道这是你干的，我只是想知道为什么。

《牛津词典》

But even if those efforts fail, it is too soon to know just how strong the new rules will be.

VOA: special.2010.07.23

It requires the citizens are informed, not just informed, well-informed enough to know whether they are being adequately served.

公民需要了解，不仅仅是了解，要很好地了解他们是否,得到了政府的良好服务。

麻省理工公开课 - 媒体、教育、市场课程节选

so I don't know, I think it's just really cool to be able to work something from the ground up.

所以，我不知道，我就是觉得能从头开始做一件事很酷。

什么是认知科学？ - SpeakingMax英语口语达人

If you dread asking a question in a meeting, just do it to know how it feels.

FORBES: Do You Suffer From Workplace Anxiety?

So -- but you need to -- I just want you to know, it's not like we haven't thought of why don't we use the SBA. We have.

WHITEHOUSE: Creating New Jobs by Investing in High-Speed Rail

" and she said "Sal, if you're meant to write songs you'll just know how to do it.

CNN: Singer/songwriter Sally Taylor