这就像生活在一个你永远无法想象的时代，而那个时代已经一去不复返了。

It was like living in an age you could never have imagined, and that never has come back.

youdao

你永远无法想象成功的道路是多么的困难。

You can never imagine how difficult the road to success is.

youdao

他们贫穷，饥饿，没有未来。生活在灾难般得环境之中，你永远无法想象的污染。

They're poor, hungry, with no future, and living in the midst of environmental disaster... pollution like you cannot imagine.

youdao

And it's of course possible to say, well, just imagine a friend that you would want to talk through all eternity to. But the whole point is, I can't imagine what that would be like.

当然可以说，想象一个你想与之,永远长谈的朋友，但问题是，我无法想象那种情景。

耶鲁公开课 - 死亡课程节选