Scientists have discovered a group of people in Ecuador with a rare gene mutation that could reveal ways to extend the human life span.
科学家在一群厄瓜多尔人身上发现了一种罕见的基因突变，有望据此揭开长寿的谜底。
Nearly 30 years ago James Fries at Stanford University School of Medicine put a ceiling of 85 years on the average potential human life span.
约30年前，斯坦福大学医学院的JamesFries把人类平均寿命的可能上限定为85岁。
The human life span puts boundaries on the subject matter that we collect with oral history.
人类生命的跨度给我们搜集口述历史资料的主题设置了疆界和范围。
While science explores how to add even more healthy years to the human life span, a graying society faces inevitable changes in attitude and lifestyle.
当科学探究了怎样在人的一生中增加更多的健康岁月，老龄化社会在生活态度和生活方式上面临着不可避免的变革。
While science explores how to add even more healthy years to the human life span, a graying society faces inevitable changes in attitude and lifestyle.
当科学探究了怎样在人的一生中增加更多的健康岁月，老龄化社会在生活态度和生活方式上面临着不可避免的变革。
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