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1. Oxford Dictionary

   loudspeaker

   • IPA[ˌlaʊdˈspiːkə]

   英式

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

   • 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 a muffled announcement is made over the loudspeaker a loudspeaker system
3. • 更多解釋

   loudspeaker

   • IPA[ˈloudˌspēkər]

   美式

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

   Oxford American Dictionary