The study looked at reports from ten European countries from two thousand seven and two thousand nine.

VOA: special.2011.07.13

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 study estimated mortality rates for people age fifteen to fifty-nine in one hundred eighty-seven countries.

VOA: special.2010.05.05

The world's largest malaria vaccine study began last year in seven African countries.

VOA: special.2010.04.20