Though why on earth you should want to have a Banquet in the morning I cannot understand.

虽然我不明白你到底为什么要在早上举行宴会。

youdao

Why on earth should their beds be properly aired, seeing that they left them in such a thankless hurry?

既然他们是这样匆匆忙忙地走了，连吃力不讨好也不知道，为什么要帮他们把床铺晒干呢？

youdao

And why on earth could that be so?

但这究竟是为什么呢？

youdao

What and how the Japanese eat, he says,explains why they are the healthiest people on earth.

VOA: standard.2010.02.23

Once we sort of settle into this vocabulary, and once we get used to this clearly unquestioningly scientific perspective, why on earth do we need pseudo-statement or fiction at all?

一旦我们习惯了这种用语，一旦我们习惯了,这种科学视角，我们为什么还需要伪陈述和虚构呢？

耶鲁公开课 - 文学理论导论课程节选

So why on earth do we want it?

既然这样，我们为什么需要诗歌呢？

耶鲁公开课 - 文学理论导论课程节选

So, why on earth does everyone think they will be able to identify the next problem?

FORBES: It's The Economy, Stupid!

Why on earth is Alan Greenspan so irked about equi-ties, particularly those of high-tech companies?

FORBES: Fact And Comment

Even so, I wonder why on earth the tax shelter industry became so enamored with acronyms.

FORBES: Beware Patented Tax Strategies