女孩发育的年龄

The age at which a girl develops

以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译

1
可能白人女孩还没有触到生物学上性发育的最小年龄，”他说。
Maybe white populations have not arrived at that biologic minimum," he says.
2
一项最新调查显示，我国女孩青春期发育年龄平均为9.2岁，比30年前的12.5岁提前3.3岁。
Chinese girls start their puberty at an average age of 9.2 years, 3.3 years earlier than 12.5 of 30 years ago, a latest survey showed.
3
结论女孩初潮年龄不仅与遗传因素有关，而且与宫内环境和儿童时期的发育有关。
Conclusion: Not only the genetic factors but also the uterine environment and the development in childhood are related to the age at menarche.

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