Pa
01
爸爸
an informal term for a father; probably derived from baby talk
02
扩音系统, 公共广播系统
an electronic amplification system used as a communication system in public areas
03
宾夕法尼亚州, 大西洋中部的一个州; 最初的13个殖民地之一
a Mid-Atlantic state; one of the original 13 colonies
