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  1. peptic ulcer

    • IPA[ˈpɛptɪk ˈəlsər]

    美式

    • n.
      a lesion in the lining (mucosa) of the digestive tract, typically in the stomach or duodenum, caused by the digestive action of pepsin and stomach acid.
    • noun: peptic ulcer, plural noun: peptic ulcers

  2. 知識+