indulging in promiscuous (casual and indiscriminate) sexual relations
同义词：promiscuousness, sleeping around
promiscuity详细解释
prom.is.cu.i.ty n.（名词）【复数】prom.is.cu.i.ties The state or character of being promiscuous.混乱，杂乱：混乱的状态或特点Promiscuous sexual relations.乱交：杂乱的性关系A mixture of diverse or unrelated parts or individuals; a hodgepodge.混杂：不同的或不相关的部分或个人的混合；搀杂物
