It was almost an impossible dream.

这几乎是一个不可能的梦想。

youdao

This story tells of two sporting heroes who made an impossible dream come true.

这个故事讲述了两位体育英雄实现了一个不可能的梦想。

youdao

He wanted to be rich but it was an impossible dream.

他想发财，然而这只是不可能实现的梦想。

《牛津词典》

"Suddenly,we realized that we had the capacity, and the encouragement, as Rotary clubs to do major projects, then the eradication of polio was no longer an impossible dream."

VOA: standard.2010.08.02

But it is worth remembering that just over a century ago, heavier-than-air flight seemed an impossible dream.

ECONOMIST: Electric planes

Human rights, human rights for all, is not an impossible dream.

UN: Secretary-General

That, of course, sounds like an impossible dream.

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