A new study looked at a single day of more than 1,200 intensive care units, or ICUs,in 75 countries.

VOA: standard.2009.12.08

After I wrote the book, Morningstar did a much more comprehensive study of every single one of the equity categories that they follow.

在我写完这本书之后,晨星公司对他们跟踪研究的每种股权资产,做了更进一步的研究

耶鲁公开课 - 金融市场课程节选

Even while Aristotle may deny that there is a single method appropriate to the study of politics he proposes a set of common questions that political scientists have to address.

且总是时有变迁，虽然亚里士多德,可能否定有单一方法适合研究政治,但他却也提出一套通用的问题,政治科学家必需加以探讨。

耶鲁公开课 - 政治哲学导论课程节选