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  1. www.webmd.com › first-aid › nosebleeds-causes-and-treatmentsHow To Stop & Prevent Nosebleeds

    2021年10月19日 · Pinch your nostrils closed. Use your thumb and index finger to hold your nostrils closed for 5 to 10 minutes while you breathe through your mouth. This puts pressure on the part of your nose that ...

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