One of the initial things that Keyes found is that there was as much as a ten-fold difference in rates of coronary disease.

凯斯首先发现的其中一项结果是,七个国家的冠心病发病率

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Sure. Belgium is first of all a very, very small country.

当然。首先，比利时是一个很小很小的国家。

比利时和美国的差异 - SpeakingMax英语口语达人

Britain anyway started producing oil in the North Sea; lots of countries in Latin America started looking and finding oil, and of course, russian oil started being very, very profitable.

英国首先在北海开采石油,后来很多拉美国家也开始开采石油了,当然俄罗斯采油收入也是颇丰的

耶鲁公开课 - 博弈论课程节选