她的态度因何而起？

Where does her attitude come from?

《牛津词典》

记住我们因何而死。

Remember what we die for.

youdao

帮助我们自己及他人了解我们因何而生。

Helping ourselves and others with a knowing of why we are here.

youdao

They were the same people who were always trying to annex Cuba; about four times over they tried to annex Cuba, and it's still a bit of mystery how it never happened.

他们与妄图吞并古巴的是同一伙人,他们曾四次试图吞并古巴,这个阴谋最终因何没有得逞倒是个谜

耶鲁公开课 - 美国内战与重建课程节选

Let's not just study what makes people happy.

我们不但要研究人们因何快乐。

哈佛公开课 - 幸福课课程节选