If something is inconceivable, it is too strange or too far from ordinary life to be thought real or possible. You cannot really picture it happening.

If something is inconceivable如果某件事是inconceivable it is too strange or too far from ordinary life to be thought real or possible意思是它太奇怪，或離日常生活太遠，讓人無法相信它是真的或可能發生 You cannot really picture it happening你真的沒辦法想像它會發生

People use it of futures they cannot imagine, and also — a little loosely — of things they simply find shocking: “It is inconceivable that they would lie.” Though actually, that second use is often drama more than strict meaning; “I find it hard to believe” is weaker, and careful speakers keep inconceivable for ideas the mind truly cannot hold as possible.

People use it of futures they cannot imagine人們用它來說自己無法想像的未來 and also — a little loosely — of things they simply find shocking也會——比較鬆散地——用來說自己單純覺得很震驚的事 “It is inconceivable that they would lie.”「It is inconceivable that they would lie.」（他們會說謊，簡直難以置信） Though actually不過其實 that second use is often drama more than strict meaning第二種用法常常比較是戲劇化的說法，而不是嚴格的意思 “I find it hard to believe” is weaker「I find it hard to believe」（我很難相信）語氣比較弱 and careful speakers keep inconceivable for ideas the mind truly cannot hold as possible講究的人會把inconceivable留給心裡真的無法接受是可能的那種想法

It is a fairly formal, rather heavy adjective. It is about what the mind can accept, not about whether a rule allows the thing.

It is a fairly formal, rather heavy adjective這是一個相當正式、蠻沉重的形容詞 It is about what the mind can accept它談的是心裡能不能接受 not about whether a rule allows the thing不是規則允不允許這件事