posse
: a large group often with a common interest
一群有共同利益的人
2: a body of persons summoned by a sheriff to assist in preserving the public peace usually in an emergency
一群被长官召集来帮助维持公共秩序的人
3: a group of people temporarily organized to make a search (as for a lost child)
一群暂时组织起来搜寻某物(比如一个走失的孩子)的人