Biochemical BC生化试剂
BC Snow下雪
bc MOMA北京百老汇电影中心
BC Conservatives卑诗保守党
bc Bulgaria保加利亚
STAR BC明星美容顾问
BC Award最佳选择奖
（） You use BC in dates to indicate a number of years or centuries before the year in which Jesus Christ is believed to have been born. Compare . 公元前
The brooch dates back to the fourth century BC.
胸针可追溯至公元前4世纪。