单词	PA system
释义	PA system noun ˌpē-ˈā-  : public-address system Word History First Known Use circa 1936, in the meaning defined above
随便看	poling-board method poling-boat polings Polinices polio polio virus polio- polio-like poliolike poliomyelitides poliomyelitis polioneuromere polioptilae polioptilas poliorcetic poliorcetics polios poliovirus polioviruses polis polish Polish berry Polish carpet Polish checkers Polish Corridor

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