your guess is as good as mine
我猜也不知道
口语·表示不知道
英文释义
Used when one does not know the answer to a question and is implying that nobody else knows either
例句
When will the package arrive? Your guess is as good as mine—the tracking hasn't updated.
典故来源
字面意为'你的猜测和我的一样好'，强调双方都缺乏信息，无法确定答案。