fall on deaf ears
US /fɔl ɑn dɛf ɪrz/
UK /fɔl ɑn dɛf ɪrz/

1.
無人理睬, 被忽視
to be ignored or disregarded; to be heard but not acted upon
:
•
His warnings about the financial crisis fell on deaf ears.
他對金融危機的警告無人理睬。
•
The students' complaints about the unfair grading system fell on deaf ears.
學生們對不公平評分制度的抱怨無人理睬。