| 单词 | ulcer |
| 释义 | ulcerBrE /ˈʌlsə(r)/ NAmE /ˈʌlsər/ noun a sore area on the outside of the body or on the surface of an organ inside the body which is painful and may bleedor produce a poisonous substance 溃疡◆ a stomach ulcer 胃溃疡 ➡ see also mouth ulcer |
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