rec·i·proc·i·ty /ˌrɛsəˈprɑs(ə)ti/
 相互性,相互作用,互惠主義


 reciprocity
 互反性


 Rec·i·proc·i·ty n.
 1. Mutual action and reaction.
 2. Reciprocal advantages, obligations, or rights; reciprocation.
 Reciprocity treaty, ∨ Treaty of reciprocity, a treaty concluded between two countries, conferring equal privileges as regards customs or charges on imports, or in other respects.
 Syn: -- Reciprocation; interchange; mutuality.

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 reciprocity
      n 1: a relation of mutual dependence or action or influence [syn:
            reciprocality]
      2: mutual exchange of commercial or other privileges