单词学习：degeneration 名词
degeneration
/dɪˌdʒenəˈreɪʃn/
退化；恶化；堕落；变性
The doctor explained to Mr. Gu that the degeneration of the joint tissue was causing his chronic pain.
医生向顾老师解释说，关节组织的退化是他慢性疼痛的原因。
单词卡片
卡片已就绪
