For example, comparing the 1980s to the 1990s, better educated individuals experienced nearly a year and a half of increased life expectancy, while the less educated experienced only half a year.

举例来说，将上世纪80年代和90年代的人相比，受教育程度更高的人的预期寿命延长了一年半，而接受教育比较少的人的预期寿命仅仅延长了半年；

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So for the past three years, the law, under No Child Left Behind, the federal government has evaluated public schools based on the progress students make towards this goal by comparing students year to year.

NPR: Revisions to No Child Left Behind

Comparing the new year to a journey, he prayed that it "may lead on a path to peace for every person and every family, for each country and for the whole world".

BBC: Pope's new year address deplores rampant capitalism

But there's another problem with comparing deficits on a year-to-year basis.

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