/def/ adj.1.(unable to hear)+ person耳聋的
Can you speak up, I'm a bit deaf.你能大声些吗, 我有点耳背。
She is now profoundly deaf.她现在彻底地聋了。
2.to be deaf to sth
(heedless)对某事置若罔闻
She remained deaf to what was going on.她仍对所发生的事情不闻不问。
3.to turn a deaf ear to sth对…充耳不闻
He has turned a deaf ear to their demands for action.对于他们要求采取行动的请求, 他充耳不闻。