an ulcer caused by the action of pepsin and stomach acid or of the bacterium Helicobacter pylori on the mucous membranes of the digestive tract
| 单词 | peptic ulcer |
| 释义 | peptic ulcernounan ulcer caused by the action of pepsin and stomach acid or of the bacterium Helicobacter pylori on the mucous membranes of the digestive tract |
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