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1. Oxford Dictionary

   pump-action

   • IPA[ˈpʌmpˌakʃn]

   英式

   • adj.
     denoting a repeating firearm in which a new round is brought from the magazine into the breech by a slide action in line with the barrel；denoting an unpressurized spray dispenser for liquid that is worked by finger action rather than by internal pressure (as in an aerosol)
2. • 釋義

   adj.

   形容詞

   • 1. denoting a repeating firearm in which a new round is brought from the magazine into the breech by a slide action in line with the barrel a pump-action shotgun
   • 2. denoting an unpressurized spray dispenser for liquid that is worked by finger action rather than by internal pressure (as in an aerosol) a preference for pump-action sprays and roll-on applicators