the period of being an adult, characterized by physical and psychological maturity

成年期, 成人阶段
a period in one's life between puberty and adulthood

青春期, 青少年时期
a young person who is in the process of becoming an adult

青少年, 未成年人
a very young child, typically from birth to around one year old

婴儿, 幼儿
the period or state of very early childhood

婴儿期, 幼儿期
the period or time of being a child, characterized by significant physical and emotional growth

童年, 孩提时代
the period of a male's life before he reaches adulthood

少年时代, 童年
the period of a female individual's life before she reaches adulthood

少女时代, 女孩的青春期
the later stage of life during which a person is considered old

老年, 晚年
the period during someone's life when they stop working often due to reaching a certain age

退休, 退休生活
to get older

变老, 老去
advanced in age

老年, 年长的
related to parents or the role of parenting

父母的, 家长的
brought to this world through birth

天生的, 出生的
the time or period of one's life when they are not young anymore and are not old yet

中年, 中年期
the state and quality of being mentally and behaviorally rational and sensible

成熟, 理智
an infant very recently born

新生儿, 婴儿
a young child who is starting to learn how to walk

幼儿, 爬行者
someone between the ages of 13 and 19

青少年, 少年
a child who is between the ages of 9 and 12

青少年之前的孩子, 九到十二岁的孩子
the period of one's life between childhood and adulthood

青年 (qīngnián), 青年时期 (qīngnián shíqī)
a person who is advanced in age, particularly one who qualifies for discounts, services, etc. provided for elderly people

老年人, 老人
intended for or related to young people, particularly in sports

青少年, 初级的
(used by children or when talking to them) an adult who is fully matured and responsible

大人, 成年人
