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

As a consequence, he and other researchers then started looking into the lifestyles of people in these various countries to see what might help explain these differences in heart disease.

看到这样的结果,凯斯和其他研究员,开始研究七个国家人们的生活方式,看看是什么原因造成了,心脏病发病率之间的差异

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选