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大姨媽一般來多少天算正常
大姨媽一般來多少天算正常
更新时间:2025-12-10 00:43:44

  女性的月經周期是21-35天,如果低于21天,就是月經時間過短;超過35天,就是月經周期過長。月經的時間是2-8天,平均是4-7天,低于2天是月經時間短,超過8天是月經時間過長。

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