Can you explain why to do it like that?

你能解释为什么那样做吗？

youdao

It's true that their implementation is very simple but why to do it yourself?

这是真的，他们的实现是非常简单，但为什么要自己做？

youdao

Why didn't you ask for help, rather than trying to do it on your own?

你干吗非得自己干，而不请人帮忙？

《牛津词典》

"Why do you like to volunteer?" "It gives me peace.Happiness.

VOA: special.2010.07.16

I didn't expect it to do this. If you understand why it did what it did, you're half way there.

这样运行的啊，如果你能弄明白为什么,它这么运行，你已经完成了差不多一半了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Usually when you know why it's not working, it's obvious what you have to do to make it work.

通常你明白了出错的原因后，很明显你必须让程序正常运行起来。

麻省理工公开课 - 计算机科学及编程导论课程节选

And inasmuch as NBC seems intent on ruining the Olympics regardless of how much we and others scream, why not explain to America why it is choosing to do this?

FORBES: Pressure Builds On NBC To Explain Why It's Ruining The Olympics

And I'm just wondering if you could maybe go into why it was decided to do it in this way, at this particular time.

WHITEHOUSE: White House Press Briefing: March 20,2009

It's difficult to explain just why we do it -- why having a very basic camera in our pocket compels us to shoot photos and videos of live music that, deep down, we know we'll never look at.

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