词根:greg = group, 表示“群体”
gregarious a. 群居的; 爱社交的(greg+arious爱…的→爱群体的)
aggregate v. 合计;聚集(ag增加+greg+ate→增加团体→聚集)
aggregation n. 聚集物(aggregate+ion)
congregate v. 聚集(con共同+greg+ate→共同集会)
disaggregate v. 分解;分离(dis分+aggregate聚合→聚合的东西分开→分解)
egregious a. 过分的;不寻常的(e出+greg+iuos→出了一般团体→过分的)
segregate v. 分开,隔离(se分开+greg+ate→和群体分开)
segregation n. (种族)隔离(segregate+ion)