英语词组public-address system是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	public-address system
释义	public-address systemn.A set of devices for making a speaker's voice louder so that he can be heard by more people. 扩音系统。◆ The public-address system broke down during the senator's speech.参议员演说时扩音器坏了。
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英语词组固定搭配大全包含9718条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。