affiliation
  加入,入會,會籍;接納,附屬;交往,聯繫,有關
  Af·fil·i·a·tion n.
  1. Adoption; association or reception as a member in or of the same family or society.
  2. Law The establishment or ascertaining of parentage; the assignment of a child, as a bastard, to its father; filiation.
  3. Connection in the way of descent.
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  affiliation
       n 1: a social or business relationship; "a valuable financial
            affiliation"; "he was sorry he had to sever his ties
            with other members of the team"; "many close
            associations with England" [syn: association, tie, tie-up]
       2: the act of becoming formally connected or joined; "welcomed
          the affiliation of the research center with the
          university"