She does not know if he is alive or dead.

她不知道他是活还是死。

《柯林斯英汉双解大词典》

I was horrified that people would think I was dead and bury me alive.

人们会以为我死了而将我活埋的想法让我极度恐惧。

《柯林斯英汉双解大词典》

He's dead and it's no use wishing him alive again.

他死了，希望他死而复生是无济于事的。

《牛津词典》

But thinking about suspended animation suggests that we may actually need a third category, suspended-- neither alive nor dead.

但是说到假死状态,我们就需要第三种可能了-,既不是死亡也不是生存。

耶鲁公开课 - 死亡课程节选

If there are three possibilities--dead, alive, or suspended-- to be dead, we could still say you've got to be broken, incapable of P-functioning.

如果有三种可能，生存，死亡或者假死-,要死亡的话，你必须是被破坏的状态，无法拥有人格功能性。

耶鲁公开课 - 死亡课程节选

It's as though we need--Normally, we think that look, either you're alive or you're dead.

通常我们都认为,人不是死就是活着。

耶鲁公开课 - 死亡课程节选

Search and rescue efforts have evolved into search and recovery efforts, because officials don't expect to find any more victims in the wreckage -- alive or dead.

CNN: Texan town tries to rebuild with community, spirituality

Anybody using roads around the UK is asked to take note of how many hedgehogs they see - dead or alive - on stretches of single carriageway roads, on journeys of 20 miles or more.

BBC: NEWS | Science/Nature | Hedgehog numbers 'in nose-dive'

The uncanny valley effect could have to do with uncertainty about whether a robotic character is truly alive or dead, and even play into our deep-seated fears of death.

CNN: Why zombies, robots, clowns freak us out