sit on the fence
对问题或争议持中立或犹豫不决的态度
口语·形容犹豫不决
英文释义
to remain neutral or undecided in a dispute or conflict
例句
You can't sit on the fence forever; pick a side in this debate.
典故来源
源自农场场景，骑在篱笆上既不左也不右，形象比喻在争论中不表态。