The research highlights the difference between chronological age and biological age, the latter of which is determined by our genetic makeup and lifestyle factors, such as diet and smoking.

此项研究显示出了时间性衰老和生物性衰老的区别，其中生物性衰老取决于人体基因组成和生活方式，例如饮食组成和是否吸烟。

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There's biological age and chronological age.

这个分为生物学年龄和实足年龄。

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That's a big chronological span, and it netted a big genetic haul: the research identified no fewer than 440 genes that start to slow down after age 40.

这个部位的时间跨度很大，而且含有大量基因：研究发现，在40岁后，不下440个基因开始放缓速度。

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So then the question becomes, how can you cultivate that entrepreneurial mindset, no matter what your chronological age?

FORBES: Do You Need To Be Young To Start A Business?

Somehow people are locking into the idea of chronological age.

WSJ: The Weekend Interview with George Shultz: Memo to Romney��Expand the Pie

It tells the peculiar love story of Benjamin and Daisy, whose romance is constantly thwarted by the fact that Benjamin's body almost never matches up with his chronological age.

NPR: In 'Benjamin Button,' A Curiously Chilly Passion