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269页（260字）
指来的不正当，去的也不正当的意思，例他曾因走私贩毒而赚得不少钱，但是悖入悖出，到头来还是两手空空。
He originally made his fortune from the smuggling of narcotics．But as the saying goes，"ill-gotten，ill-spent，"such people are bound to come a cropper in the end．