“Period of rapid growth” in Japanese
Short answer
Period of rapid growth in Japanese is “伸び盛り” (nobizakari). Full meaning: growth period, period of rapid growth.
Other ways to say “Period of rapid growth” in Japanese
発育盛り
hatsuikuzakari period of rapid growth
高度成長期
koudoseichouki period of rapid growth (especially Japan's period of rapid economic growth after WWII)
伸びざかり
nobizakari growth period, period of rapid growth
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