名词
中文翻译：衰老
同义词：
['decline', 'decline in health', 'senescence']
例句：
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1. As we age, our bodies begin to change.
随着年龄的增长，我们的身体开始发生变化。
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2. The elderly are often the focus of social services.
老年人往往是社会服务的重点对象。
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3. Aging is a natural process that everyone goes through.
衰老是一个自然的过程，每个人都会经历。