your guess is as good as mine

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释义
我不知道
I do not know the answer to that question

例句
Hank:Where's WaIt?
Skyler: I haven't seen him since this morning.Your guess is as good as mine.(Breaking Bad)
汉克：沃特呢？
司盖乐：自打早上，我就没看到他。我也不知道。（绝命毒师）