名词
中文翻译：老年退化
同义词：
['senile disease', 'senile dementia']
例句：
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1.As he grew older, his memory began to fail him.
随着他年龄的增长，他的记忆力开始衰退。
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2. The elderly often suffer from senile degeneration.
老年人往往患有老年痴呆症。
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3. His wife noticed a change in his behavior after he was diagnosed with senile degeneration.
他的妻子注意到他在被诊断出老年痴呆症后行为发生了变化。