abbreviation for Before Christ : used in the Christiancalendar when referring to a year before JesusChrist was born 公元前（Before Christ的縮寫(xiě)） The Battle of Actium took place in 31 BC. 阿克提爾姆戰(zhàn)爭(zhēng)爆發(fā)于公元前31年。 比較 AD adverb (CALENDAR) BCE返回 BC