to blossom; to flower; to bloom
to flower (of a civilization, talent, etc.); to flourish; to become widespread
長年の訓練が金メダルとして花開いた。
Her many years of training finally blossomed into a gold medal.
庭のバラが美しく花開いて、良い香りがした。
The garden roses blossomed beautifully, filling the air with a lovely fragrance.
いつか彼の才能が花開く。
Someday his talent will blossom.