他的伤口因为没有妥善清理而开始化脓。

His wound began festering because it wasn't cleaned properly.

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His wound began festering because it wasn't cleaned properly.

### 解释 festering 是动词 fester 的现在分词形式。fester 的意思是"化脓、溃烂",指伤口因感染而恶化并产生脓液的过程。

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