n
1 [U] state of being a member of a group, society, etc （社团等的）会员身分, 资格
*apply for membership of the association 申请加入该协会.
2 [Gp] (number of) members 会员（总称）; 会员人数
*The membership numbers 800. 会员共有800名.
* The membership is/are very annoyed at your suggestion. 会员们对你的建议甚为恼火.
* a club with a large membership 有众多会员的俱乐部.

n
[U]
when someone is a member of a club, group, or organization
membership of
　Greece first applied for membership of the EU in 1975.
membership inAmE
　I forgot to renew my membership in the sailing club.
　You should carry your membership card with you at all times.
　Membership fees are being increased this year.
[singular also + plural verb British English]
all the members of a club, group, or organization
　The membership voted to change the rules about women members.
[singular]
the number of people who belong to a club, group, or organization
　We're trying to increase our membership.
　The club now has a membership of over 2,000.

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COLLOCATES for sense 1
apply for membership
renew your membership (=apply to become a member again after your membership has ended)
union/church/party etc membership (=membership of a particular group)
full membership (=membership with all the rights that can be allowed to members)
membership card
membership fees

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