'But why?' he interpolated.

“但为什么？”他插嘴问。

《牛津词典》

'But why...?' Her voice tailed away.

“但是为什么…？”她的声音细了下去。

《牛津词典》

"I don't think I should stay in this house."—"But why?"

“我想我不应该再呆在这栋房子里了” — “可这是为什么？”

《柯林斯英汉双解大词典》

But why is that? A study published in two thousand three in the journal Science offered an answer.

VOA: special.2009.06.24

But why is it acting? Why specifically acting and why this weird comment at the end, "What could be prettier?"

为什么是表演，为什么是具体的表演，为什么,会有这么奇怪的评论，还能有更漂亮的事情吗“

耶鲁公开课 - 1945年后的美国小说课程节选

Yeah. That will be fine but why don't you want to go?

也可以啊，不过你为什么不想出去吃呢？

Is it okay 实战 - SpeakingMax英语口语达人

But why are most e-ink displays hidden behind a rigid glass screen and not made bendy?

BBC: Bend me, shape me: Flexible phones 'out by 2013'

But why, I asked, did Greece have more income equality than they previously had?

FORBES: 'Systemic Risk' Is Not Event Driven, It Is Character Driven

But why has it been so difficult for Americans to take soccer to their hearts?

CNN: When U.S. postmen and miners humbled England