middle aged and elderly population
... elementary and middle school students in the countryside 农村中小学生 收藏 middle aged and elderly population 中老年人群 收藏 elementary school and middle school students 中小学生 收藏 ...
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middle aged and elderly population
中老年人口
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Parkinson disease (PD) is a common disease in the middle-aged and elderly population, which may affect their quality of life.
帕金森病(PD)是中老年人的常见病之一，严重危害中老年人的生活质量。
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