The listening journal you assigned us to keep for the Intro to World Music class, I am not sure I understand what to do.

您在《世界音乐入门》课上让我们写一篇音乐报告，我并不确定自己该写些什么。

youdao

I'm not sure I understand.

我想我还是不十分了解。

youdao

I'm not sure I understand why you used this sentence.

我并不能确信我是否理解了你使用这个句子的原因。

youdao

So, I'm not sure I understand the question.

我不确定我是否明白了你的问题

耶鲁公开课 - 生物医学工程探索课程节选

I've studied it for years, and I'm still not sure I understand it.

WSJ: Angelina Jolie as Film Director, Promoter

"I'm not sure I understand why new-media companies need to pay to get big companies to pay attention to them, " says Dave L. Balter, founder of BzzAgent, a word-of-mouth marketer that Puris approached about joining up.

FORBES: Magazine Article

I'm not sure -- there have been a variety of amendments, as I understand, voted on -- some of them defeated, like I think -- according to Dana Milbank, columnist for The Washington Post, and I'm just citing him -- 35 votes now by Republicans to repeal the Affordable Care Act.

WHITEHOUSE: Press Briefing