- [uncountable] impossibility (of something/of doing something)
the fact of not being possible 不可能: 不可能the sheer impossibility of providing enough food for everyone 完全无法给每个人提供足够的食物
- [countable, usually singular]
something that is not possible (似乎)不可能的事 a virtual impossibility 几乎不可能的事 a physical impossibility 自然法则上的不可能性