确定性和可能性 - 不可能

used to say that the chances of something happening or being true are very slim

the slightest chance of something happening or being true

something that seems impossible to occur

used to refer to something that cannot be done or obtained in any way

something that is very good or desirable but highly unlikely to happen or be real

used to refer to something that is impossible or is extremely hard to imagine or obtain

used to indicate that something is impossible, unacceptable, or absolutely will not happen under any conditions

used to say that an offer or possibility is not renewable or available any more

to be unable to do or finish something without being harmed or suffering its consequences

the time when it becomes impossible for one to return to a previous place or state or to make a different decision

not allowed or possible

said to mean that it is impossible for something to ever happen

used to express disbelief in something happening

used for saying that it is completely unlikely that something ever happens

used to say that one thinks that something will never happen

used to show that one will do whatever one can to stop something from happening

to desire what cannot be achieved

(of a proposal, topic, or offer) unavailable or incapable of being considered

a hope or wish that cannot be realized or fulfilled

used to emphasize that something is completely impossible or prohibited