it's all Greek to me
口語(yǔ)·表達(dá)困惑
例句
I can't understand this manual. It's all Greek to me.
典故來(lái)源
源自莎士比亞戲劇《凱撒大帝》,原指聽(tīng)不懂希臘語(yǔ),后比喻完全無(wú)法理解的內(nèi)容。