p.a. system
导读：p.a. system读音音标
p.a. system意思解释
英英释义 p.a. system n.an electronic amplification system used as a communication system in public areas同义词：public a
p.a. system意思解释
英英释义 p.a. system n.an electronic amplification system used as a communication system in public areas同义词：public a
p.a. system读音音标
p.a. system意思解释
英英释义
p.a. systemn.
an electronic amplification system used as a communication system in public areas
同义词：public address systemPA systemP.A.PA
