You mean it ?
母语人士的回答
Rebecca
mean某事意味着打算、有目的或忠于它。所以you mean it? are you serious?, are you sure?是另一种说法。例子: You mean it? You really think I can get in to that university? (认真的吗?你觉得我能去那所大学吗?) 例子: A : I'll pay the bill. (我会付钱的。) B : You mean it? (你确定吗?)