They have studied these books and known how to sort the rubbish.

他们学习了这些书，知道如何分类垃圾。

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For many years I have studied global agricultural, population, environmental and economic trends and their interactions.

多年来，我一直在研究全球农业、人口、环境和经济趋势及其相互作用。

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Geologists have studied the way that heat flows from the earth.

地质学家们已经研究了热量从地表流出的方式。

《柯林斯英汉双解大词典》

People who have studied Mary Lyon say she was not fighting a battle of equality between men and women.

VOA: special.2010.06.27

There are groups of people who have studied the impact of Trans fats on health for a number of years.

有些人已对反式脂肪,对健康的影响进行了数年的研究

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The best work on this has been done by Elissa Newport and Sam Supalla who have studied people who have been in the United States for many, many years like 30, 40 years and seeing how well they have come to speak English.

在这方面最佳的研究,是由伊莉萨·纽波特,和萨姆·苏普拉所进行的,他们研究了在美国生活了,三四十年以上的人们,探究了这些人们讲英语的流利程度

耶鲁公开课 - 心理学导论课程节选

Aides have studied the records of Republican senators on the committee to offer possible questions.

CNN: Sotomayor's confirmation hearing starts Monday

"No one could have studied me and said, 'This is an antique radio lover, '" says Brill.

FORBES: Magazine Article

There are certainly folks who have studied the history of intelligence, and SIGINT in particular.

FORBES: These Aren't The Objective Cybersecurity Commission Members You're Looking For