Some survive just 10 million years (the Sun is 4.6 billion years old and just reaching middle-age).

其中的一些仅仅存在了一千万年(太阳已经存在了46亿年，而且还仅仅步入中年)。

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And much to their partner's annoyance, many women hang on old shoes, building up a sizeable collection by middle age, even if many go unworn most of the time.

而让她们的伴侣苦恼的是，女人们总是不扔旧的鞋子，这样到了中年的时候就积攒了一大堆鞋，即便有的从来都没穿过。

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The findings contradict the long established belief that the amount of sleep we need falls as we approach middle and old age.

这项研究反驳了长期以来的观点，即随着年龄的增长，我们需要的睡眠时间会变短。

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Since 1995, Dr. Ryff and her Wisconsin team have been studying some 7, 000 individuals and examining factors that influence health and well-being from middle age through old age in a study called MIDUS, or the Mid-Life in the U.S. National Study of Americans, funded by the National Institute on Aging.

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Yet these middle-age subjects are also wondrous variations on the theme of their 7-year-old selves.

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