cohabit t共栖;同居
to cohabit同居
illicit cohabit姘居
illegal cohabit非法同居
Or Cohabit或同居
cohabit infective test同居感染试验
right of cohabit同居权
V-RECIP（相互动词） If two people are cohabiting, they are living together and have a sexual relationship, but are not married. 同居 [正式]
About one-third of all people cohabit at some time in their lives.
大约有三分之一的人曾与人同居。
N-UNCOUNT（不可数名词） cohabitation
The decline in marriage has been offset by a rise in cohabitation.
同居人数的增加跟结婚人数的减少相抵消。