[Sửa] Thời đại, kỷ nguyên

Christian era

công nguyên

[Sửa] (địa lý,địa chất) đại

mesozoic era

đại trung sinh

[Sửa] kỷ nguyên

[Sửa] kỷ

[Sửa] thời kỳ

[Sửa] N.

[Sửa] Age, period, time(s), day(s), epoch, stage; generation,cycle, date: They lived in an era of peace.

[Sửa] N.

[Sửa] A system of chronology reckoning from a noteworthy event(the Christian era).

[Sửa] A large distinct period of time, esp.regarded historically (the pre-Roman era).

[Sửa] A date at which anera begins.

[Sửa] Geol. a major division of time. [LL aera numberexpressed in figures (pl. of aes aeris money, treated as fem.sing.)]