fall between two stools
做出一个选择、决策或抉择的时候，无法做出明确的决定，以至于无法获得任何结果或好处
口语·形容因犹豫而失败
英文释义
to fail because of being unable to choose between two alternatives
例句
He tried to please both managers but ended up falling between two stools.
典故来源
源自16世纪谚语，指坐在两个凳子之间会摔倒，比喻因犹豫不决而两头落空。