Sororate marriage is a type of marriage in which a husband engages in marriage or sexual relations with the sister of his wife, usually after the death of his wife, or once his wife has proven infertile.http://www.
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。