impossible与not possible有什么区别?为什么?

impossible与not possible有什么区别?为什么? nothing is impossible和anything is possible有什么区别? impossible is nothing 与 nothing is impossible有什么区别 it is possible与 it possible有什么区别? impossible 和 possible的区别 be impossible of和be impossible for 有什么区别 impossible is nothing和nothing is impossible有什么区别 whenever it is possible与if it is possible有什么区别 impossible和improbable有什么区别 unable与 impossible用法上有什么区别?可以互换吗? probably与maybe与may be与possible与can有什么区别? possible与perhaps有何区别?