有頂天時代の英語

the Tempo period―the Tempo era

the golden age―one's best days―one's reign

one's bright days―best days

the age of cave-dwellers

a Japanese era called Taisho period

a Japanese historical period called the {"Jomon"} period

the Heisei era

the Heian period of Japan

the bronze age

an era in Japan called Edo

an era in Japan called Azuchi-momoyama Era

the glacial epoch

geological age called the Archean Era

the bronze age

time immemorial

an eventful period

the feudal times

the heroic age

a period of human history called the Bronze Age

The time will finally come.

the stone age

a geological era named Archaeozoic era

in the day of the dinosaurs

barbarous times―barbaric days

the Nara Period of Japan

behind the times―out of date

the Golden Age

a period of time called the alluvial period

a period called the Heian Period of Japan

the age of rival barons