This subject traces the evolution of ideas about nature, and how best to study and explain natural phenomena, beginning in ancient times and continuing through the Middle Ages and the Renaissance.

本课程将从上古时代追溯到中世纪与文艺复兴，探究人们对自然概念的演进，以及对自然现象研究与解释方式的转变。

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One of the most important steps to optimizing SQL statements is to explain the statements of interest and to study their access plans.

优化 SQL 语句一个最重要的步骤是解释感兴趣的语句和研究其访问计划。

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The findings may 'help to explain the well-documented association between sedentary screen-time activities and overweight,' the study says.

该研究称，这些结论或许“有助于解释久坐电脑前与超重之间证据充分的关系”。

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Researchers don't yet know how to explain these correlations -- and since the study was not a controlled trial, it's not clear whether marijuana or some other factor in marijuana users' lifestyles actually accounted for the beneficial effects.

CNN: Marijuana: The next diabetes drug?

The study itself contains a study designed to look for genes that might explain why some people respond and others don't.

FORBES: Race-Based Medicine, Genomics And You

The next is that this variation has little to do with things you might suppose would explain it: class sizes, hours of study per subject, and spending per pupil.

ECONOMIST: Education and the wealth of nations