英和和英

the age of cave-dwellers

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

one's bright days―best days

the Middle Ages

barbarous times―barbaric days

the feudal times

the feudal times

the Heian period of Japan

the age of rival barons

the glacial epoch

time immemorial

the Heisei era

an eventful period

a period of Meiji Japan called 'Rokumeikan'

the Nara and Heian eras when the legal system called 'ritsuryo' was used

the bronze age

the Iron Age

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

an era in Japan called Edo

unpeaceful times

the stone age

one's dark days―evil days

the Tempo period―the Tempo era

monotonous times―uneventful times―waste periods of history

a transition period

geologic eras

a Japanese era called Taisho period

the period of the Renaissance

the bronze age

the Dark Ages