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loudspeaker是什么意思

loudspeaker

美[ˌlaʊd'spiːkər]  英[ˌlaʊd'spiːkə(r)]
n.  扬声器;喇叭
  近义词:megaphone,bullhorn,loudhailer,speaker,amplifier,pa,mike,public-addresssystem,horn,microphone,speakersystem,speakerunit,system,unit,loudspeakersystem,

双解释义

n.(名词)
  1. [C]扩音器,扬声器,喇叭 part of a radio receiving apparatus that changes electric waves into sound-waves loud enough to be heard without ear-phones

英英释义

Noun
  1. electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance

例句

用作名词(n.)
  1. The nurse paged the doctor on the loudspeaker.护士通过广播喊叫那位医生。
  2. We heard the news over the loudspeaker.我们听见扩音器里广播了这一消息。
  3. The police addressed the crowd through a loudspeaker on their car.警察通过他们汽车上的喇叭向人群喊话。
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