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20世纪末至新世纪之初,世界一些国家的医学家在着力于对人类长寿问题研究的基础上,产生了一些有关长寿新观念。
From the late 20th century to the beginning of the new century, medical scientists in some countries of the world have made some new ideas about longevity based on their studies on longevity of mankind.