Teeth from ancient human ancestors suggest that females joined new social groups once they reached maturity.
从远古人类祖先牙齿显示，女性们一到成年就加入新的社会群体。
2
Development can refer to maturity in terms of physical, cognitive, language, social-emotional, temperament, or fine and gross motor skills development.
发育可以指身体、认知、语言、社会情感、气质，或精细和大运动技能的发育。
3
The social consequences will become more evident because the boys born in large numbers over the past decade will reach maturity then.