These tests have shown that over the last 100 years, each new generation has become smarter than the older ones.

这些测试表明，在过去的100年里，每新一代人都比老一代更聪明。

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The older ones will all be professors at the universities.

那些年纪大的都是大学教授。

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The older ones can cook basic dishes and babysit the younger ones.

大点儿的能做基本的饭菜，能照顾弟弟妹妹。

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And here is at least part of the reason why: Since late July the government has been paying for people to trade in older vehicles for newer ones with greater fuel economy.

VOA: special.2009.08.07

Most of the artists are young, and the older ones tend to be lesser known.

NEWYORKER: Not Like the Other Ones

The older ones appeal to me quite a bit, like the dark Pirelli poster from the 1920s.

FORBES: Magazine Article

They already respect him, and a fancy title wouldn't exactly impress hardened major-league players, especially the older ones.

WSJ: David Wright Is Captain Without the 'C'