组关系
relationship───n.关系；关联
predatory relationship───掠夺性关系
classmate relationship───同学关系
relationship between───……之间的关系
relationship with───与……的关系
relationship pond───关系池
tumultuous relationship───混乱的关系
lasting relationship───持久的关系
inverse relationship───逆相关；相反关系
A group of researchers reveal scores of studies that trace the relationship between health and interaction with others.───一组研究人员公布了大量追踪健康和与他人互动之间关系的研究。
A secondary group entails two or more people who are involved in an impersonal relationship and have come together for a specific, practical purpose.───第二群体指的是两个或两个以上的人，他们处于一种非个人的关系中，因一个特定的、实际的目的走到一起。
A primary group involves two or more people who enjoy a direct, intimate, cohesive relationship with one another.───一个基本群体包括两个或以上的人，彼此之间有直接、亲密、紧密的关系。
As well, each user ID may belong to more than one group, so the user-to-group relationship is many-to-many.───同样，每个用户ID也可以属于多个组，这样用户与组的关系就是[多对多]。
On the Relations of Ethnic Group Relationship, National Relationship and Social Relationship───关于族群关系、民族关系与社会关系的关系
After these, I find out these points. Firstly, the impression of "changing" get though the whole life story combining with these four principal themes:demand, exclusion, anomia and group relationship.