用"堕落"形容"同居"合理吗？

　

        The one-year national survey was conducted by the Beijing Normal University's psychology department, which interviewed more than 2 million people around the country.

　　北京师范大学心理学系开展的一项为期一年的全国调查共对全国200多万人进行了访问。

　　A report on love and marriage in Chinese society was compiled based on the survey, whose results were released on Tuesday.

　　该调查结果于本周二公布，有关部门还根据该调查编撰了一份有关中国社会爱情及婚姻观的报告。