/ˌeɪ ˈdi: ||; ˌe ˈdi/abbr
from the Latin ‘anno domini’; used in dates for showing the number of years after the time when Jesus Christ was born 耶稣纪元;公元:
AD 44公元44年☞Look at BC. 参看 BC。
ad
/æd ||; æd/noun
(informal 非正式)=ADVERTISEMENTI saw your ad in the local paper.我在当地报纸上看到你的广告。