非法同居 meaning in Chinese

concubinage
lascivious cohabitation
unlawful cohabitation

Cohabitation without legal marriage
非法同居没有合法婚姻关系的同居
Both sides is in new 1994 " marriage registers regulation " the asymmetry that after carrying out , was not registered and lives jointly is factual marriage , regard concubinage as
双方在1994年新《婚姻登记治理条例》实施之后未登记而共同生活的不称为事实婚姻，视为非法同居。
Experts attribute the trend to a variety of factors : economic and social forces that make it more difficult for those in their 20s to reach independence ; increasing numbers of cohabitating couples ; more highly educated women who have fewer highly educated men of comparable age to marry ; and more choices open to women than in the past
专家们认为这种趋势是由各种因素造成的：经济和社会因素使得20多岁的年轻人更加难以自立；非法同居者的数量日益增长；受到高等教育的妇女人数增多，而受过高等教育、年龄与之相配的适婚男人却数量减少；妇女比以前有了更多的选择机会。