bc
US /biːˈsiː/
UK /biːˈsiː/
缩写
公元前
before Christ (used after a date to indicate that it was a specified number of years before the beginning of the Christian era)
示例:
•
The Roman Empire was founded in 27 BC.
罗马帝国成立于公元前27年。
•
Many ancient civilizations flourished thousands of years BC.
许多古代文明在公元前数千年繁荣发展。