millennium
/mɪˈlenɪəm; mə`lɛnɪəm/ n
(pl -nia / -nɪə;-nɪə/ or ~s)
1 [C] period of 1000 years 一千年
the first millennium AD 公元第一千年.
2 the millennium [sing]
(religion 宗) the 1000-year reign of Christ on earth prophesied in the Bible 千禧年, 千年王国（《圣经》中预言的基督复临治理世界的一千年）.
3 the millennium [sing]
future time of great happiness and prosperity for everyone （未来的）太平盛世, 黄金时代.