Learn what "we don't know" means, when people say it, and how to use it naturally in English.

This means there is no clear information about whether or when the person will regain consciousness.
From Sisters Have Crush On The Same Man, Episode 7
The speaker is giving bad medical news and saying the outcome is uncertain.
Use this only in a medical context when talking about a serious condition. It is not a general everyday phrase and should not be indexed.
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