P.A.的英文翻译是什么意思，词典释义与在线翻译：

2026-08-22 22:15:18

Noun:

an electronic amplification system used as a communication system in public areas

Adverb:

by the year; every year (usually with reference to a sum of money paid or received);

"he earned $100,000 per annum"

"we issue six volumes per annum"