fall on deaf ears
白费口舌，对方不听
口语·表示建议或警告被忽视
英文释义
to be ignored or disregarded, typically when trying to communicate or make a point
例句
I tried to warn him about the risks, but my advice fell on deaf ears.
典故来源
源自《圣经·马太福音》，比喻说话像落在聋人耳朵上，完全不被听取或理会。