It's a complete mystery to me why they chose him.

我真无法理解他们为什么会选他。

《牛津词典》

The plain woman explained to me why she complained about the chain.

长相平平的女人向我解释她为什麽抱怨那条链子。

youdao

Unfortunately, that fails to add any nodes; perhaps readers can explain to me why this does not succeed.

不幸的是，没有增加上任何节点，也许读者能够告诉为什么失败了。

youdao

"Well,counsel,I would disagree with you except you can point to me why would I have the most reason to lie?

VOA: standard.2009.11.10

And she was able to tell me that they can divine from the hits on their site why people are coming to that site.

她告诉我，他们可以从网站的点击次数,推断出人们为什么访问他们的网站。

普林斯顿公开课 - 人性课程节选

Now, I know it's easy to look at me and say, "God, there's an old leftie, why doesn't he grow up?"

如今,我知道你轻易就可以看着我感叹,"天啊,这个老左派,他怎么还不成熟起来"

耶鲁公开课 - 1871年后的法国课程节选

Why is this -- explain to me why this is different, what Harry Reid is doing.

WHITEHOUSE: Press Briefing by Press Secretary Jay Carney,

"It's no longer a mystery to me why Microsoft's offer isn't around, " Icahn told The Wall Street Journal.

FORBES: Jerry's Gotta Go, Icahn Says

They were explaining to me why our open economy seems to always be prone to speculative bubbles and crashing.

FORBES: Things Never End Well, Otherwise They Would Never End