成员

How many people sit on the commission?

card-carrying/full/regular member

new member

member of a society/a club/a group/an association

rank-and-file/honorary/leading member

long-standing member

household/family member; member of a family

crew/cabinet/commission member

charter/non-regular/associate (candidate) member

member organization

membership group

increase the membership

draw/enrol members (from)

admit/initiate members (into an organization); admit sb to membership; affiliate sb (with)

become a member (of); affiliate oneself (with)