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。You just don't expect to have to talk to your six-year-old daughter about having periods.
你想做的只是希望不要谈论你六岁大的女儿有例假。During your first visit, the doctor will ask you lots of questions, including the date of your last period.
第一次去产检的时候，医生会问你很多问题，其中包括你最后一次例假的日期。And like a lot of the other changes associated with puberty, menstruation can be confusing.
就像和许多其他与青春期有关的变化一样，例假会令人困惑。Article 36 A worker shall have at least one regular day off in every seven days.
第36条（例假）劳工每七日中至少应有一日之休息，作为例假。1 patient underwent implant replacement and autograft due to pseudarthrosis and instrument failure.
1例假关节形成患者采用更换断裂内固定及局部植骨治疗。In Kenya, a project aims to educate girls about HIV prevention while helping them stay in school during their monthly periods.
在肯尼亚一项旨在教育女孩关于HIV防护的工程在她们来例假时帮助她们留在学校。And if breast development was occurring earlier, girls would inevitably get their period earlier.
而且，如果女孩乳房发育提前的话，初次例假也必会提前出现。They were also having their first periods, on average, three months earlier.
她们的首次例假平均也提前三个月。