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1. Oxford American Dictionary

   loudspeaker

   • IPA[ˈloudˌspēkər]

   美式

   • n.
     an apparatus that converts electrical impulses into sound, typically as part of a public address system or stereo equipment

   • noun: loudspeaker, plural noun: loudspeakers

2. • 釋義

   n.

   名詞

   • 1. an apparatus that converts electrical impulses into sound, typically as part of a public address system or stereo equipment a muffled announcement is made over the loudspeaker a loudspeaker system