这是你纵然失去却不知道为什么的原因吗？

Is there a reason, you were lost although you don't know why?

youdao

疾病控制中心的研究给出一个为什么的原因：即使病人找医生做试验，也不是全部病人都能这样，况且这快速试验测试猪流感效果不佳。

The CDC's study gives one reason why: even if patients go to the doctor to be tested, and not all do, the instant test does not do a good job of detecting swine flu.

youdao

各种因素都会导致产生差异，这就是为什么开发人员每天至少必须运行一次完整的构建过程，以确信他们没有破坏什么的原因。

This variation may introduce discrepancies, and that's why developers have to run the complete build sequence at least once a day to ensure that they haven't broken anything.

youdao

he's a lot of fun to hang out with, which is why I enjoy working with him.

和他在一起的时候总是很愉快，这也是为什么我喜欢和他一起工作的原因。

有印象的教授 - SpeakingMax英语口语达人

And this is the reason why enthalpy was invented and why it's so important. Because we want to know this. So this for a finite change.

这也就是为什么焓要被提出,而且如此重要的原因,因为我们想要知道这些。

麻省理工公开课 - 热力学与动力学课程节选

I worked on specifically, I looked at -and this is also the reason why it's difficult to say what is a just university, because we didn't just look at Princeton, we didn't just look at Ivy League Schools or at least private institutions.

我专门研究的是,顺便，这也是为什么,为公正的大学下定义很难得原因，因为我们研究的不仅仅是普林斯顿大学，也不仅仅是常青藤学校,至少不是私人学校。

普林斯顿公开课 - 人性课程节选