第三人称复数：ulcers
ulcer基本解释
名词溃疡; 腐烂物; 道德败坏
ulcer
ulcer词典解释
1. 溃疡
An ulcer is a sore area on the outside or inside of your body which is very painful and may bleed or produce an unpleasant poisonous substance.
e.g. ...stomach ulcers.
胃溃疡
ulcer英英释义
noun
1. a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue
Synonym: ulceration