/əˈfɪlɪeɪt/
with obj.(一般作be affiliated to/with)
1- officially attach or connect (a subsidiary group or a person) to an organization使（下属集团, 个人）隶属, 加入：
a non-political union, not affiliated to any party.
一非政治联盟, 不隶属于任何党派。
1.1
- (of an organization) admit as a member（组织）接纳…为成员：
the main party agreed to affiliate four Conservative associations.
主流党同意接纳四个保守协会。
1.2
- no obj. officially join or become attached to an organization（正式）加入, 隶属：
almost all students affiliate to the Students' Union.
几乎所有的学生都加入了学生会。
派生词
affiliative
adjective词源
mid 18th cent.: from medieval Latin affiliat- 'adopted as a son'， from the verb affiliare, from ad- 'towards'+filius 'son'.