Menstruation (a period) is a major stage of puberty in girls; it's one of the many physical signs that a girl is turning into a woman.

月经（例假）的来到是女孩青春期中经历的一个重要阶段；它是女孩变为女人的众多生理变化之一。

youdao

Alex is not interested in girls yet.

亚历克斯对女孩子还不感兴趣。

《牛津词典》

In girls shoes, the heel can be high or low.

女鞋的跟也许会高或矮。

youdao

An international conference took place this week in Dakar,Senegal, to find new ways to get and keep girls in school.

VOA: special.2010.05.20

and she had gathered all the girls, kind of, on the floor in the dormitory into her room and...

她把大概所有的女孩都叫来了，大家坐在她宿舍房间的地板上，然后……

从朋友到恋人 - SpeakingMax英语口语达人

He would see how fifteen-year-old girls worked in the mine--Catherine, who grows up rather quickly in the mines.

他观察那些15岁的,小姑娘怎么工作,凯瑟琳,在矿井里成长的很快

耶鲁公开课 - 1871年后的法国课程节选

Second, we need to take programs that work to scale and increase investments in girls.

FORBES: Global Change Starts with Girls

My 11-year-old son has never let on that he is remotely interested in girls.

CNN: The secret life of my sixth grader

In some communities in eastern Uganda, it is practiced in girls up to age 15.

CNN: Uganda bans female circumcision