Who knows why he was scolding ?

谁知道他为啥在骂人？

youdao

Who knows why you bore me.

黄混蛋，谁知道你为什么要生我？

youdao

Who knows why to live, can survive.

知道为什么而活的人，便能生存。

youdao

Experts say one of the reasons the gunfight is so interesting to many people is that no one knows who shot first or why.

VOA: special.2010.02.15

Jojo Who knows why,they call me Jo-Jo.

没有原因，就是叫我。

耶鲁公开课 - 死亡课程节选

So, fairly simple idea, who knows why we actually care what the values of X or Y are at least in this out of context.

看，非常简单吧，天晓得为啥我们关心x和y的值,在这里我们只是断章取义罢了。

哈佛公开课 - 计算机科学课程节选

Who knows why she said it or what she meant, but I did it.

CNN: 'Gilmore Girls' reunion? Someday, someday, maybe

Who knows why politicians do what they do?

FORBES: Pennsylvania Suit Against NCAA For Penn State Sanctions Is Unwarranted

Nobody quite knows who it is and why they have done it.

CNN: Amanpour: Attack comes at crucial time for region