turn a deaf ear 充耳不闻；置若罔闻；听而不闻；装聋作哑

【例句】
I didn't expect him to turn a deaf ear to his comrades' criticism.
我没料想到他对同志们的批评竟充耳不闻。

Young people sometimes seem to turn a deaf ear to the words of their anxious parents.
年轻人有时把父母的苦口婆心之言当作耳边风。