someone who treats another person in a cruel, violent, or unfair way

a child abuser 虐待儿童的人

Both women testified against their alleged abuser. 两名女性都指证了受指控的施虐者。

They have begun to track down human rights abusers. 他们已开始追查侵犯人权的人。

someone who uses something in a way that is harmful or morally wrong

a drug/solvent abuser 药物/溶剂滥用者

He is a reformed cocaine abuser. 他曾是一名可卡因滥用者，已经改过自新。