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.
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the gestation period
月経.
月経周期.
the menstrual cycle
the prenatal period
月経.
the neonatal period
the peevishness of age
名詞の変化形:
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