偶尔使用。在柯林斯辞典中， gangrene 是3万个最常用词之一。
英式英语: gangrene NOUN
Gangrene is the decay that can occur in a part of a person's body if the blood stops flowing to it, for example as a result of illness or injury.
Once gangrene has developed, the tissue is dead.
gangrene 的定义—— 柯林斯 英语词典
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