1.infancy1 幼儿时期
He showed his talents in his infancy.
他在婴儿时期就展示出了天分。
2.school children 学龄儿童(6-12岁)
School children should receive education.
学龄儿童应该同意教育。
3.adolescence2 青春期
Adolescence is a key period in ones life.
青春期在人的一生中至关要紧。
4.thirties 而立之年
He is in his thirties.
他处在而立之年。
5.middle age 中年
Mother is entering into her middle age.
母亲正在步入中年。