can't know
“不可能知道下一回合会发生什么”
There's no way to know what will happen next turn.
— RRR：双雄起义 (2022)
而人不可能知道谁善谁恶
And it is impossible for people to know who is good and who is evil.
— 女巫 (2016)
你不可能知道
You couldn’t possibly know.
— 自己去看 (1985)
他不可能知道以后的事情
He couldn't possibly know what will happen in the future.
— 末代皇帝 (1987)