例如，600名85岁以上的老人在如何成功优雅变老的问卷中做选项时，答案最多的选项使专家们都瞠目结舌：适应力。
For example, when 600 people age 85 and older were asked to identify the key components of successful aging, the answer that topped their list surprised even the experts: resilience.
恐惧使他隔宿变老。
科学家们尝试人为使这些线虫变老。他们让线虫受到热和辐射等压力，但是这些都不能对涉及老化过程的基因产生影响。
The scientists tried to age the worms artificially by subjecting them to stresses such as heat and radiation but none of these had any effect on the ageing genes.
科学家们尝试人为使这些线虫变老。他们让线虫受到热和辐射等压力，但是这些都不能对涉及老化过程的基因产生影响。
The scientists tried to age the worms artificially by subjecting them to stresses such as heat and radiation but none of these had any effect on the ageing genes.
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