Let me spell out why we need more money.

我来说说清楚，我们为什么还需要钱。

《牛津词典》

That's why we call it black tea.

这就是为什么我们叫它红茶。

youdao

That's why we have plastic surgery!

那就是为什么我们有整形手术！

youdao

"That's why we need strong rules of the road to guard against the kind of systemic risks we have seen.

VOA: special.2009.09.18

That's why we said on the personality theory,as we went ahead in time, once the P-functioning stops,I don't exist anymore.

这就是为什么根据人格理论的说法，随着时间流逝，人格功能停止，我也不再存在。

耶鲁公开课 - 死亡课程节选

So we ask very limited questions, which is why we brag about how accurately we can predict the future.

我们研究的问题是非常有限的,正因如此我们才敢自豪地说,我们能非常精确地预测未来

耶鲁公开课 - 基础物理课程节选

It will commission a panel to look into why we failed to anticipate the threat.

FORBES: The Next Threat

"Beer is a great British manufacturing success story and that is why we must support it, " he urged.

BBC: Call time on beer duty escalator, government told

Ms. FAYE TURNEY (Detained British Sailor): They explained to us why we'd been arrested.

NPR: Iran, Britain at Impasse over Captives