p.a.

per annum 每年

同：	[r.] annually, each year, per annum, per year [n.] p.a. system, pa, pa system, public address system

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
[同] each year, annually, p.a., per annum, per year

an electronic amplification system used as a communication system in public areas
[同] p.a., p.a. system, pa, pa system, public address system

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