名词医溃疡; 腐烂物; 道德败坏

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

noun

1. a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue

Synonym: ulceration