1. This is a book on marital affairs.
    这是一本关于婚姻的书。

2. Her father proceeded to quote statistics showing that mixed couples had higher divorce rates than couples of the same race and gave examples of mixed couples he had counseled who were having marital difficulties.
    她的父亲开始引用统计数据说明异族通婚的夫妻离婚率比同族结婚的夫妻要高，而且还列举了接受过他咨询的、在婚姻上有麻烦的异族通婚夫妇的例子。