Why don't they cut out the middleman and let us do it ourselves?

他们为什么不取消中间商，让我们自己来做呢？

《柯林斯英汉双解大词典》

Why don't they stop pussyfooting around and say what they really mean?

为什么他们不能不再小心翼翼，而是说出自己的心里话？

《柯林斯英汉双解大词典》

Why don't they buy food like us?

他们为什么不像我们一样买食物？

youdao

But why don't they tidy up? Well let's just work it out.

为什么你们不打扫啊,我们来分析一下

耶鲁公开课 - 博弈论课程节选

Why don't they do that?

为什么分子会这样？

麻省理工公开课 - 热力学与动力学课程节选

So, hedge funds do not advertise, that's why people don't know about them and they have a mysterious -they sound mysterious.

对冲基金公司做不了广告,那也是公众并不了解他们的原因,他们披着一层神秘的面纱...,他们听起来挺神秘的

耶鲁公开课 - 金融市场课程节选

Why don't they ever ask why the high-tech and entrepreneurial ferment sweeping the world is almost entirely absent from Europe?

FORBES: Fact and Comment

Journalists do not have such a financial stake in getting out bad news, so why don't they step into that role?

FORBES: How The Media Missed Enron

Why don't they ask him questions about what happened or didn't happen?

CNN