the period of being an adult, characterized by physical and psychological maturity
成年期, 成人阶段
当她达到成年并可以做出自己的选择时，她感到了一种自由的感觉。
a period in one's life between puberty and adulthood
青春期, 青少年时期
她在青春期期间面临了许多挑战。
a young person who is in the process of becoming an adult
青少年, 年轻人
许多青少年面临着在学业上表现良好的压力。
the period or state of very early childhood
婴儿期, 幼儿早期
父母在孩子的婴儿期提供照顾和养育方面发挥着至关重要的作用，为健康发展奠定了基础。
the period of a person's life when they are a child
the period of a male's life before he reaches adulthood
童年, 少年时代
在他的童年时期，夏天是在探索他家后面的树林、建造堡垒和捕捉萤火虫中度过的。
the period of a female individual's life before she reaches adulthood
少女时期, 女孩时代
莎拉珍惜她少女时期与玩偶玩耍和穿着公主服装的回忆。
the later stage of life during which a person is considered old
老年, 晚年
艾米丽对父母的爱和关怀随着他们步入老年而加深，认识到了珍惜共同时光的重要性。
the period during someone's life when they stop working often due to reaching a certain age
退休, 退役
to get older
变老, 年龄增长
advanced in age
年长的, 上了年纪的
related to parents or the role of parenting
父母的, 与育儿相关的
他们参加了一个家长研讨会，学习有效的育儿技巧。
brought to this world through birth
出生的, 诞生的
汤姆的女儿早出生，但成长为一个健康快乐的孩子。
the time or period of one's life when they are not young anymore and are not old yet
中年, 壮年
中年通常是专注于个人成长的时期。
the period during which a person is not old enough but is not young either
中年, 成熟期
他在中年时期开始质疑自己的职业选择。
the quality of behaving and thinking in a sensible, responsible, and emotionally developed way
an infant very recently born
新生儿, 婴儿
莎拉把她的新生儿女儿抱在怀里，充满了爱和喜悦。
a young child who is starting to learn how to walk
幼儿, 学步儿童
她在故事时间给幼儿读了一本图画书。
someone between the ages of 13 and 19
青少年, 十几岁的孩子
莎拉的妹妹是个青少年，目前正在应对高中的挑战。
a child who is between the ages of 9 and 12
青春期前的孩子, 9至12岁的儿童
玛丽的青春期前表妹喜欢读书和运动，随着年龄的增长探索不同的兴趣。
the period of one's life between childhood and adulthood
青春, 青年时期
a person who is advanced in age, particularly one who qualifies for discounts, services, etc. provided for elderly people
老年人, 长者
intended for or related to young people, particularly in sports
青少年，面向年轻人的
