May I ask why you took that decision?

我可否问一下你为什么要作出那样的决定？

《牛津词典》

Dare I ask why?

我敢问为什么吗？

youdao

May I ask why you are interested in working for us?

我可否问下您为什么有兴趣为我们工作？

youdao

We're not being merely churlish, I think, if we want to ask why someone would want to write a poem in such a form.

我们要问为什么会有人,想要写这种形式的诗并非毫无道理。

耶鲁公开课 - 弥尔顿课程节选

Let's think about it for ten seconds why this could be interesting and relevant, and I want to ask if anybody changed their mind.

首先我们来,考虑下这条，提示几秒钟。

麻省理工公开课 - 热力学与动力学课程节选

I think we're fully entitled to ask why: why Milton waits for the last eight lines of his poem to tell us that there's a difference, that there's a difference between the poet and the speaker.

我们完全有权利问为什么：,为什么弥尔顿要等到诗的最后8行,才告诉我们这里的区别，这里诗人和演说人之间的区别。

耶鲁公开课 - 弥尔顿课程节选

When I ask why, he claims Perry is doing all the things you would expect him to do if he were running.

FORBES: Is Gov. Rick Perry Running for President?

However, when I ask why they need a faster computer and they tell me that it will allow them to build a more valuable deliverable for our clients, the elements of that improved deliverable become part of my strategic vision.

FORBES: CEO 101: Vision, Team Builder, Top Salesman

Karar tells me all of this in a very matter-of-fact way, and I ask him why he seems so unaffected by it.

CNN: War-scarred Baghdad places little faith in U.S. election