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

绝不可能, 想都别想
the slightest chance of something happening or being true

一丝机会, 微乎其微的希望
something that seems impossible to occur

不可能的事, 天方夜谭
used to refer to something that cannot be done or obtained in any way

无论如何, 怎么也
something that is very good or desirable but highly unlikely to happen or be real

画饼, 空中楼阁
used to refer to something that is impossible or is extremely hard to imagine or obtain

无论如何也算不上, 绝对称不上
used to indicate that something is impossible, unacceptable, or absolutely will not happen under any conditions

绝不可能, 想都别想
used to say that an offer or possibility is not renewable or available any more

机会已经没了, 现在太晚了
to be unable to do or finish something without being harmed or suffering its consequences

承受不起, 代价惨重
the time when it becomes impossible for one to return to a previous place or state or to make a different decision

无法回头的地步, 再也退不回去的阶段
not allowed or possible

不可能, 想都别想
said to mean that it is impossible for something to ever happen

等太阳从西边出来, 等猪会上树
used to express disbelief in something happening

永远不可能, 想都别想
used for saying that it is completely unlikely that something ever happens

永远不可能, 想都别想
used to say that one thinks that something will never happen

永远不可能, 想都别想
used to show that one will do whatever one can to stop something from happening

除非从我的尸体上踏过去, 我绝不答应
to desire what cannot be achieved

痴心妄想, 妄想不可能的事
(of a proposal, topic, or offer) unavailable or incapable of being considered

不再考虑, 已不在选项内
a hope or wish that cannot be realized or fulfilled

空中楼阁, 无法实现的幻想