They would ask their mother unanswerable questions.

他们会问他们母亲不能回答的问题。

《柯林斯英汉双解大词典》

You know they're coming: Those seemingly unanswerable questions that pop up during job interviews.

你知道该来的总会来：那些看起来无法回答的问题总会在求职面试的时候突然冒出来。

youdao

These are but only two examples of countless unanswerable questions about how the natural world works.

这不过是自然界中无数的难以回答问题中的两个举例而已。

youdao

The new codes could also solve long-unanswerable questions about which ads really work and which articles prompt the best response.

FORBES: Scanned Goods

In my case, the problem wasn't only the implausibility of the scene, but also the distracting, unanswerable questions that started swirling around in my head afterward.

ENGADGET: Editorial: Is that Kevin Spacey behind all those Apple products? (updated)

Once, when I was asking too many unanswerable questions in the Local History section of the Niagara Falls Public Library, librarian Maureen Fennie held up a hand to stop me.

NPR: Excerpt: 'Inventing Niagara'