年代niándài 1.时代;时期;时间(多指过去较远的){age; time long past (oft. referring to a period)}: ～久远{age-old; of remote antiquity}|黑暗～{dark age}|这件古董恐怕有～了。{I'm afraid this antique goes back to many, many years ago.} 2.每一世纪中从‘…十’到‘…九’的十年,如1990—1999是二十世纪九十年代。{decade, such as the 1990s, which denotes the 1990-1999 period}