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1. Oxford American Dictionary

   off-patent

   • IPA[ˈôfˈpatnt]

   美式

   • adj.
     no longer subject to patent restrictions
   • adv.
     out of patent restrictions
2. • 釋義

   adj.

   形容詞

   • 1. no longer subject to patent restrictions firms legally mass-produce off-patent products

   adv.

   副詞

   • 1. out of patent restrictions the drug has gradually come off-patent