ulcer

['ʌlsə]

n.溃疡, 腐坏物,弊病

例句与用法：

His ulcer has kicked up again.

他的溃疡又发病了

An ulcer located at the initial point of entry of a pathogen.

初疮病原体最初侵入的那点处的溃疡

My mouth has an ulcer.

我的口腔出现了溃疡。

The old man has a stomach ulcer.

那个老人得了胃溃疡。

详细释义：

n.[C]

1. 【医】溃疡

2. 腐烂物

3. 道德败坏; 腐败; 弊病

the ulcer of envy

嫉妒的弊害