in one ear and out the other
左耳朵进右耳朵出
口语·形容听而不记
英文释义
to hear something but quickly forget or ignore it
例句
I told him to clean his room, but it went in one ear and out the other.
典故来源
源自16世纪谚语，比喻信息像穿过耳朵一样不被记住，形象描述听而不闻。