Entitled the Seven Countries Study, it is considered one of the greatest studies of its kind ever performed.

它被称为“七国研究”，被认为是同类研究中有史以来最伟大的研究之一。

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The group studied thirty-seven countries.

该组织对37个国家进行了研究。

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Polio now exists only in seven countries in the world.

现在，全世界只有几个国家还存在脊髓灰质炎。

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But in the last twenty years, H.I.V.and the collapse of the Soviet Union helped raise death rates in thirty-seven countries worldwide.

VOA: special.2010.05.05

Well, unlike the choosiness studies, here we actually have some pretty good cross-cultural data So one study, for instance, was done in 10,000 people from thirty-seven countries, ?" asking people, "Who do you want to be with?"

与伴侣选择标准研究不同，我们事实上有一些很好的跨文化数据,例如，有一个调研,以来自37个国家的1万个人为调研对象，问他们“你最想和谁在一起“

耶鲁公开课 - 心理学导论课程节选

The CHD stands for coronary heart disease - in--across these seven countries, from the lowest to the highest.

HD就是冠心病的意思,从最高到最低差异高达十倍

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Forty seven countries now have coverage, and the cars have driven five million miles.

BBC: Google Street View - a closer look

Seven countries at the summit are now EU members, and the remaining nine are not.

BBC: NEWS | Europe | Tensions simmer at Romania summit

So far around seven countries of the 27 have signed up to do so.

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