未聽說過(或接觸過)的;很生疏的
牛津電影裡 100%
used to say that you have not heard a particular idea, piece of information, joke, etc. before
It's a new one on me.
My God. That's a new one on me.
釋義來自《牛津高階英漢雙解詞典》第 9 版