the time of life when a woman’s ovaries stop working and menstrual periods stop. natural menopause usually occurs around age 50. a woman is said to be in menopause when she hasn’t had a period for 12 months in a row. symptoms of menopause include hot flashes, mood swings, night sweats, vaginal dryness, trouble concentrating, and infertility.
the gestation period
月経.
月経周期.
the menstrual cycle
the prenatal period
月経.
the neonatal period
the peevishness of age
a minor
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