She began to menstruate regularly at 13 at intervals of 28～32 days with slight dysmenorrheal.她于13岁开始有正常的月经,周期为28～32天,有轻度的月经痛.She began to menstruate regularly at 13 at intervals of 28~32 days with slight dysmenorrheal.她于...
She began to menstruate regularly at 13 at intervals of 28～32 days with slight dysmenorrheal.她于13岁开始有正常的月经,周期为28～32天,有轻度的月经痛.Lean hard-training women athletes may menstruate less frequently or not at all.身材瘦削而且训练艰苦的女运动员行...