| 词汇 | ulcerate | 
| 释义 | ulcerateWord family  verbulceratenounulcerationulcerousnessulceradjectiveulcerativeulceredulcerousadverbulcerously Illness & disabilityul·cer·ate /ˈʌlsəreɪt/ verb [intransitiveI, transitiveT] MIto form an ulcer, or become covered with ulcers  (使)形成溃疡;(使)溃烂  —ulcerated adjectiveadj  —ulceration /ˌʌlsəˈreɪʃən/ noun [uncountableU] Examples from the Corpus ulcerate• There is a tendency for mucous membranes to ulcerate and the ulcers to spread. | 
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