contributive
  (a.)貢獻的,出資的,助長…的
  Con·trib·u·tive a. Contributing, or tending to contribute.
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  contributive
       adj : tending to bring about; being partly responsible for;
             "working conditions are not conducive to productivity";
             "the seaport was a contributing factor in the growth of
             the city"; "a contributory factor" [syn: conducive, contributing(a),
              contributory, tributary]