throw the baby out with the bathwater
过度舍弃，抛弃中间或有价值的东西，只保留不值得或无用的东西
口语·表达过度舍弃
英文释义
to get rid of something valuable or important while trying to eliminate something undesirable
例句
Don't throw the baby out with the bathwater by deleting all your old files.
典故来源
源自德国民间谚语，指倒洗澡水时连婴儿一起倒掉，比喻过度舍弃。