public-address system

US 
UK 
  • un.有线广播系统;机上广播系统;扩音系统
  • Web公共广播系统;机内广播系统
Plural Form:public-address systems  
public-address system
n.
1.
广播系统an electronic system that uses microphones and loudspeakers to make music, voices, etc. louder so that they can be heard by everyone in a particular place or building

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Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
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