I seem to have involved myself in something I don't understand.

我似乎已经将自己卷入了我不了解的事情当中。

《柯林斯英汉双解大词典》

As though bored with the view - how familiar it must be to him - he turns back to me and says something I don't understand.

虽然欣赏这些对他来说太熟悉的景色很无聊，他还转身对我解释一些我不明白的事情。

youdao

Ithelps me understand that there is something going on here between behavior andlanguage that I just don't get.

这让我了解到，在这里，语言与行为之间，存在着某些我还不能够理解的关系；

youdao

I negotiated this agreement for the people of Uganda. If he is fighting, he is fighting for something that I don't understand."

VOA: standard.2009.08.27

If I'm saying something that you don't understand, the chances are pretty good that there's 25 or 50 other students in the class who don't understand it either.

如果我正说着什么你不懂的东西，那时就是举手的好机会,因为有25或50个别的学生,也不懂。

耶鲁公开课 - 死亡课程节选

I don't understand why you'd want to take a pill to fix something that we know little about.

我不明白为什么你会愿意吃药片来治好一些我们甚至都不清楚的毛病。

对付压力的方法 - SpeakingMax英语口语达人

"I don't like to answer definitions like that that are grounded in science or something else that I don't understand, " he said.

NPR: Democratic Candidates Share in Gay Rights Forum

Mr. HENRY: Well, you have to understand that I don't have something in mind and then try to fit it into a song.

NPR: Joe Henry Is a Still Driving Man

"I just don't understand what would draw somebody to do something like that, " Ms Duschl told US television station WMAR-TV.

BBC: NEWS | Americas | US toddler burnt in park attack