Natural philosophy involved the study of all aspects of the material world, animate and inanimate.

自然哲学涉及到了对包括有生命体与无生命体的物质世界的全面研究。

《柯林斯英汉双解大词典》

A study in Sweden indicated that kindergarten children who could play in a natural environment had less illness and greater physical ability than children used only to a normal playground.

瑞典的一项研究表明，能够在自然环境中玩耍的幼儿园儿童比只能在普通操场上玩耍的儿童患病更少，体能更强。

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A study by the Center for Research on the Epidemiology of Disasters finds that, between 1980 and 2007, nearly 8,400 natural disasters killed more than two million people.

灾害流行病学研究中心的一项研究发现，在1980年至2007年间，近8400起自然灾害导致200多万人死亡。

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Professor Bartemeus says the study shows how human activities in the natural environment can change the travels of other organisms.

VOA: special.2010.03.02

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

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

VOA: special.2009.05.07

McCarty, an investigator at Nationwide's Center for Gene Therapy, says relying on another researcher's data from a natural-history study would be problematic.

WSJ: Families Push for New Ways to Research Rare Diseases

And even if a natural-history study leads to a clinical trial for a treatment, there is no guarantee the same children will be allowed to participate.

WSJ: Families Push for New Ways to Research Rare Diseases

When he heard about the natural-history study being planned by Nationwide, Mr. Zeighami says he wondered why they had to redo data that Shire might already have.

WSJ: Families Push for New Ways to Research Rare Diseases