1. 〔芸術・国家などの〕the golden age;〔若さ・人気などの〕one's heyday;〔人生の〕one's prime;〔作物などの〕the season
    • 自然主義もその時が最盛期であった
    • Naturalism was then in its heyday./That was the golden age of naturalism.
    • 今はすいかの最盛期だ
    • This is the season for watermelons./Watermelons are at their best now.