I do not know why the ceiling should be expected to have that effect.

我不明白为什么应该期望天花板产生那种效果。

youdao

They do not know why matter has mass.

他们不知道为什么物质会具有质量。

youdao

I stopped by this but, I do not know why.

我在这茅屋面前停住了，我不知道为什么。

youdao

They do not know why da Vinci painted it, or how it ended up in the collection of French ruler Francis the First.

VOA: special.2010.06.23

But, you know why not do something a little special, little different, and they decided instead to use lithium.

但是你懂的，为什么不做的更特殊，更与众不同一些呢？

麻省理工公开课 - 化学原理课程节选

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

"I do not know why they moved me to the new scheme, " she said.

BBC: Tenants' rent arrears soar in pilot benefit scheme

She wrote: "I do not know why Father Gerry is angry with me".

BBC: NEWS | UK | Scotland | Glasgow and West | Angelika diary mentioned accused

The researchers do not know why these cells have this defence, but other nearby cells in the hippocampus do not.

BBC: Brain's 'stroke shielding' cracked