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。
If he chooses to stop taking the drugs, he will undergo natural male puberty at a later stage and his future fertility would not be impacted.
如果他选择停药，他将会在下个阶段进入男性青春期，而他将来的生育能力也不会受到影响。
No two people are at exactly the same stage as they go through puberty, and everyone changes at his or her own pace.
没有两个人在度过青春期时的经历是一模一样的，每个人都在他或她自己的路上改变。
Puberty for boys is the stage in life when they become men.
青春期是男孩们成长为男人的人生阶段。
The leptin level in stage B2 is possibly the threshold value for initiating female puberty.
B2期瘦素水平可能是瘦素启动女性青春期发育的阈剂量。
The leptin level in stage B2 is possibly the threshold value for initiating female puberty.
B2期瘦素水平可能是瘦素启动女性青春期发育的阈剂量。
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