We can only ask this simple question: Why?

我们只能问一个很简单的问题：为什么要这样做？

youdao

This simple question left Rei with nothing to say.

这个简单的问题让丽无言以对。

youdao

Have You Ever Asked Yourself This Simple Question?

你曾问过自己这个简单的问题吗？

youdao

Now, I wanted to compare it with another question that I--people have this simple idea that there's a best investment.

现在,让我们对比另一个问题,人们总是简单地认为存在一种最佳投资

耶鲁公开课 - 金融市场课程节选

How many" is very simple. You will have no problem with this question.

How many”的用法也非常简单。相信你不会遇到太大的问题的。

How many课堂 - SpeakingMax英语口语达人

And eventually this question would start, "Is this really all there is to life, ?" just simple pleasure like this?"

最终疑问会变成，“难道生命仅此而已，只是这样单调的快感“

耶鲁公开课 - 死亡课程节选

It had been a long time since I had consciously considered this simple question.

FORBES: The Shape of Things to Come (December 1, 2001)

Recently I posed this simple question on Twitter: Do you love or hate Valentine's Day?

CNN: Why I hate Valentine's Day

Very likely, you will find that this simple question will be insightful unto itself.

FORBES: Priorities 2013 -- Turning Data Into Insights