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为了探讨健康长寿的因素,我们于1987年4～9月组成联合调查组,对90岁以上老人进行了抽样调查,现将结果分析报告如下。
In order to explore the factors of health and longevity, we formed a joint investigation team from April to September 1987 to conduct a sample survey of people over the age of 90, and the analysis of the results is as follows.