他: he死: die公元: 1991年 A.D. 1991前: front三十: thirty三年: triennium公元前: anno domini; ante christum; b.c.----------------------before christ; bc before the birth of jesus christ; pre-christian era他死于事故: he died in accident他死于狱中: he died in prison. lawsuit公元前10世纪: the 10th century b.c公元前1世纪: 1st century bc公元前20世纪: 20th century bc公元前221年: 221 B.C.公元前2年: 2 bc公元前2世纪: 2nd century bc公元前3世纪: 3rd century bc公元前43年: 43 bc公元前4世纪: 4th century bc公元前5世纪: 5th century bc公元前684年: six eighty four b.c公元前6世纪: 6th century bc公元前7世纪: 7th century bc公元前8年: 8 bc缩公元前: b.c他死于心脏病: he died of heart attack
