shot in the dark
瞎猜；盲目尝试
口语·描述盲目猜测
英文释义
an attempt or guess that is made without any knowledge or evidence; a guess that is based on random chance or luck
例句
I had no idea what the answer was, so I took a shot in the dark and guessed C.
典故来源
源自射击场景，在黑暗中盲目开枪，比喻毫无把握的尝试或猜测。