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我们经常收到外国朋友寄给的一些卫生与生活杂志 ,上面刊有若干自我养生保健方法和技术。现译载其中一篇 ,以供研究参考和交流
We often receive magazines for health and life sent to you by foreign friends, which contain several self-care methods and techniques. Now translated one of the articles for reference and exchange of research