And why is it that a foreigner was as designer?

Why is it that productivity increases as quality improves?

为什么生产力会随着品质改进而提升?

Why is it that they left you alone here?

他们究竟为什么把你单独留在这里不管 呢 ?

Why is it that he rarely mentions his childhood?

他为什么很少提到他的儿童时代 呢 ?

A: Why is it that I find chocolate so addictive?

我发现巧克力很容易上瘾,这是为什么?

Why is it that we're only willing to do that when a life is at stake?

为什么只有在性命攸关的时候我们才想起这么做?

Why is it that silver is not widely used as conductor?

银究竟为什么未被广泛地用作导体 呢 ?

Why is it that a plumber can earn more than a scientist?

为什么管子工挣的钱比科学家要多 呢 ?

So how is it that your prints ended up all over her apartment?

那她公寓里为什么满是你的指纹?

How is it that we were able to overcome all those difficulties and hardships?

为什么过去很困难的局面我们都能渡过?

How is it that you are here?

你怎么在这儿?

How is it that we were able to manage all that?

那个时候为什么能这样做?

How is it that you know everything that's happening in this place?

你怎么知道这里发生的所有事 呢 ?

How is it that they don't feel the urge to embrace each other's naked bodies?

为什么会不需要拥抱那爱人的裸露的身体?

How is it that he left early?

他为什么会这么早离开?

How is it that you wish to leave for good?

你自动么会想到要永远离开 呢 ?

How is it that you can never get here on time?

为什么你总是不能按时来 呢 ?

How is it that we live like this?

为什么我们要过着这样的生活?

How is it that you are still here?

你为什么还在这儿？

He sent his wife to the University of California to improve her teaching credentials.

他送妻子到加利福尼亚大学上学，以提高她当教师的学历。

She will first have to establish her leadership credentials.

她得首先证明她有担任领导的资格。