the first flush of youth/manhoodBEGINNINGthe beginning of a period of time when you are young etc 青春初期/成年之初 a group of adolescent boys in the first flush of manhood 一群刚刚步入成年的青春期男孩
the first flush of youth/manhood• Now aged 31, Cardus is no longer in the first flush of youth.
→ the first flush of youth/manhood at flush2(2)