1 [U] the state of being a member of a group, organization, etc 会员身分；会员资格: To apply for membership, please fill in the enclosed form. 欲申请成为会员，请填妥附上的表格。a membership card/fee 会员证；会费

2 [C,U] the people who belong to a group, organization, etc 全体会员；成员: Membership has fallen in the past year (= the number of members). 过去一年会员人数减少了。