青春時代

せいしゅんじだい

noun

•

one's youth, one's youthful days (years), the flower of one's youth, the springtime of one's life(yojijukugo)

青	blue, green
春	springtime, spring (season)
時	time, hour
代	substitute, change, convert, replace, period, age, counter for decades of ages, eras, etc., generation, charge, rate, fee