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  1. breakthrough bleeding

    • n.
      bleeding from the uterus occurring between menstrual periods, a side effect of some oral contraceptives.
    • noun: breakthrough bleeding

    • 更多解釋
    • IPA[ˈbrākˌTHro͞o blēdiNG]
    • n.
      bleeding from the uterus occurring between menstrual periods, a side effect of some oral ...

    Oxford American Dictionary