我不知道曲名，但听得出这曲调。

I don't know the title but I recognize the tune.

《牛津词典》

我知道这并不理想，但只好这样啦…

I know it's not ideal but there you go...

《牛津词典》

我知道，但你可以坐汽车从温哥华回到贝灵汉，还是能省钱。

I know, but you can take a bus from Vancouver back to Bellingham, and still save money.

youdao

And I don't know why, but since time immemorial that is the way computer scientists have drawn trees.

叶子是在最下面的，我不知道为什么,但从记事以来他们就是这么画树的,这也许就是为什么我们。

麻省理工公开课 - 计算机科学及编程导论课程节选

But for me, I like to look at something and just say, "I like this. I don't really know why though."

但对我来说，我喜欢看着某个东西，然后说，“我喜欢这个。但我也不知道为什么。”

关于现代美术 - SpeakingMax英语口语达人

So, I've never heard the click-click-click-click-click, and we might bring a Geiger counter in here some time later in the semester so we can check all of you out, and hopefully we won't hear any when we do that either.

但我知道如果,你听到哒哒哒的声音，就表明你有麻烦了，我从来没听到过哒哒哒的声音,也许以后我可以带一个,来课堂上检测你们每一个人，希望我们不会听到哒哒哒的声音。

麻省理工公开课 - 化学原理课程节选