出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第166页（275字）
形容人的用心狠毒且充满狂妄的欲望，例此人是狼子野心，本性难改，要以爱心去感化他，怕是徒劳无益，白费力气。
This man was born aggressive and crueltraits difficult to change．If you imagine that love is going to bring a change of his heart，you are probably going to be disappointed．