In fact, I do this as well, I mean I have water with me and I have no idea why because I'm not particularly dehydrated.

事实上,我也整天带着水壶,我是说我随身带水,但又不知道为什么要带,因为我并没有特别的脱水症状

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

The third derivative, unfortunately, was never given a name, and I don't know why.

遗憾的是三阶导数没有专门的名称,我也不知道这是为什么

耶鲁公开课 - 基础物理课程节选

I think our entertainment industry likes to make movies about people in finance, but they are inevitably portrayed as evil and I don't know why that is.

娱乐产业喜欢,制作关于金融业的电影，但里面的人物总是被刻画的很恶毒,我也不知道为什么。

耶鲁公开课 - 金融市场课程节选

Percent daily--no, I don't know why that's not on there actually.

日百分比,我也不知道它为什么没被标出来

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But I, I don't know. I just like looking at his stuff.

我也不知道为什么。我只是喜欢看他设计的东西。

梦想成为时装设计师 - SpeakingMax英语口语达人