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1·Menstruation may cease when a woman is anywhere between forty-five and fifty years of age.

月经可能在女性45至50岁之间停止。《柯林斯英汉双解大词典》

2·For the first 21 days after menstruation, estrogen hormones create a feeling of well-being and give generally happy feelings.

大多数绝经前的女性在月经之后的21天里，体内的雌激素会产生一种健康幸福感。

3·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。

4·Women, during menstruation, should use clean, soft cloth or sanitary napkins.

女士在月经期间应该选用干净、柔软的软布或卫生巾。

5·If menstruation comes, will the safety be far behind?

大姨妈都来了，安全期还会远么？

6·Leonurus herbal regulates menstruation and arrest leucorrhoea.

益母草药，调经止带。

7·Excess androgens can cause irregular or absent ovulation and menstruation.

过多的雄激素导致不规则排卵或不排卵和闭经。

8·Chaotic menstruation differentiated between blood vacuity and kidney vacuity.

经乱区分为血虚和肾虚。

9·Fat yogurt: Many women may feel weak and drowsy before and after menstruation.

脱脂酸奶，许多妇女在经期前后会感到乏力嗜睡。

10·Nine: women should avoid menstruation, pregnant women can not do semi-permanent;

九：女性应避开经期，孕妇不能做半永久；

月经

1·Menstruation may cease when a woman is anywhere between forty-five and fifty years of age.

月经可能在女性45至50岁之间停止。《柯林斯英汉双解大词典》

2·Women, during menstruation, should use clean, soft cloth or sanitary napkins.

女士在月经期间应该选用干净、柔软的软布或卫生巾。

3·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。

例假

1·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。

(1)irregular menstruation月经不调

(1)abnormal menstruation月经失调