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  1. ulcer

    • IPA[ˈəlsər]

    美式

    • n.
      an open sore on an external or internal surface of the body, caused by a break in the skin or mucous membrane that fails to heal.;a moral blemish or corrupting influence
    • noun: ulcer, plural noun: ulcers

    • 釋義

    名詞

    • 1. an open sore on an external or internal surface of the body, caused by a break in the skin or mucous membrane that fails to heal.
    • a moral blemish or corrupting influence he's a con man with an incurable ulcer called gambling
  2. 知識+