The College of Agriculture and Natural Resources at Michigan State University offers sixty programs of study.

VOA: special.2009.05.07

It represents the moment in the life of Socrates where he turns away from the investigation of natural phenomena to the study of the human and political things the moral and political things.

它代表着苏格拉底生命中,从调查自然现象,转向研究,人类与政治事务,即道德与政治事务。

耶鲁公开课 - 政治哲学导论课程节选

A year later,Darwin would complete his detailed study of evolution through natural selection.

VOA: special.2009.12.01

Perhaps this is consistent with any study of the natural world."

VOA: special.2011.03.23