1. Conclusion There may be correlation among obesity in children, timing of menarche and obesity in puberty.
本次研究通过回顾性调查初三年级女生的青春期发育情况,探讨月经初潮年龄与肥胖之间的关系。 。

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2. Menarche occurred at 13 years of age and the menstrual cycle remained within normal limits until the onset of menorrhagia.
月经于13岁开始,一直到发生月经过多症以前,经期正常。

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3. Girls go through menarche between the ages of 9 and 16, and the variations in LIN28B accounted for just one to three months of these differences.
女孩们在9岁到16岁之间经历初潮,而这些年龄的差异中,其中一到三个月的差异是由基因LIN28B差异导致的。

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4. Girls go through menarche between the ages of 9 and 16, and the variations in LIN28B accounted for just one to three months of these differences.
女孩们在9岁到16岁之间经历初潮,而这些年龄的差异中,其中一到三个月的差异是由基因LIN28B差异导致的。

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5. a recurring cycle (beginning at menarche and ending at menopause) in which the endometrial lining of the uterus prepares for pregnancy; if pregnancy does not occur the lining is shed at menstruation.
从某一月经期的开始至下一月经期的开始的整个生理变化周期。

-- 来源 -- 汉英 - 翻译参考

6. "The first menstruation (menarche) occurs after other changes of puberty, usually at 11-13 years of age, apparently triggered by the passing of a weight threshold."
月经第一次来潮(初潮)出现于青春期其它变化之后,通常为十一~十三岁时,明显地是因通过一重量上的临界点而触发。

-- 来源 -- 英汉 - 翻译样例 - 生命

7. delay of menarche beyond age 18.
岁以上月经初潮的延误。

-- 来源 -- 汉英 - 翻译参考

8. age of menarche
初潮年龄

-- 来源 -- 英汉 - 翻译参考[网络]

9. Delayed menarche, dysmenorrheal. Can conceive, delivered mostly girls.
(1)多有月经初潮偏迟,痛经史。曾经生育的大多是女孩儿。

-- 来源 -- www.baiclinic.com