She returned to England to begin working towards a doctorate in animal behavioral science.

VOA: special.2009.11.18

The language of Aristotelian political science is the language of man the political animal.

亚里士多德式政治科学的语言,是人类的语言，政治动物的语言。

耶鲁公开课 - 政治哲学导论课程节选

In his paper, which was published online by the journal Science, Nabel describes the results of animal tests using the 1999 vaccine for the boost.

VOA: standard.2010.07.21