Mercury has virtually no atmosphere, meaning life as we know it is impossible.

水星几乎没有大气层，这意味着生命。

youdao

They know it is impossible for them not to have been exposed to lethal doses of radiation.

他们知道他们不暴露在高计量的辐射之下是不可能的。

youdao

I know it is impossible to eliminate all injustice in life, but if I can always find ways to help someone else, at least I will feel at peace with myself.

我知道要消除世界所有的不公是不可能的，可是如果我随时可以设法来帮助别人，至少我可以觉得心安。

youdao

Scientific research is progressing at such an alarming rate I think it's impossible to know what ten years from now will hold."

VOA: standard.2010.06.09

"When a referee decides a game has finished I know it is impossible to replay the game, " said the Italian.

BBC: Fifa turns down Irish replay plea

It is as impossible to know as it is to get Amazon to act.

FORBES: Amazon Reviews: RJ Ellory Apologises for Fakery

Do you know why it is nearly impossible to get a seat upgrade on any US airline on a Thursday night?

FORBES: Can Consultants Save Us Money By Doing More Work Remotely?