你不可能永远瞒着她，不让她知道事实真相。

You can't shield her from the truth forever.

《牛津词典》

“起初，他们的教会帮了忙，但你不可能永远让他们帮忙。” Andrea 说。

"At first their church helped out, but you can't keep that up forever," Andrea says.

youdao

我们的好运不可能永远保持不变。

Our luck couldn't hold forever.

《柯林斯英汉双解大词典》

And Hobbes draws from this startling conclusion, in many ways the infamous conclusion that the sovereign can never act unjustly.

霍布斯从他自己的，这一声名狼藉的结论中得出另一观点,即君主不可能永远做到公正。

耶鲁公开课 - 政治哲学导论课程节选

But Descartes said that can't be because there are things that humans do that no machine could ever do.

但是笛卡尔否定了这一观点,因为有些事情,人类可以做到,机器永远不可能做到

耶鲁公开课 - 心理学导论课程节选

I think it's very difficult, indeed I think it's impossible, to think of anything you'd want to do forever.

我认为很难，其实我认为不可能，想出一件你希望永远做下去的事。

耶鲁公开课 - 死亡课程节选