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  1. laser gun

    • IPA[ˈleɪzər ɡən]

    美式

    • n.
      a handheld device incorporating a laser beam, used typically for reading a bar code or for determining the distance or speed of an object.;(in science fiction) a weapon that uses a powerful laser beam.
    • noun: laser gun, plural noun: laser guns

  2. 知識+