他们研究了这种疾病的地域分布情况。

They studied the geographical distribution of the disease.

《牛津词典》

他们研究了半个世纪以来世界各地渔业的数据。

They have looked at half a century of data from fisheries around the world.

youdao

他们研究天空。

They studied the sky.

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The good scholars of Milton reveal their typical resistance to anything even remotely interesting or alive in the text.

研究弥尔顿的优秀学者们透露他们反对,研究文本中那些不太有趣和生动的东西。

耶鲁公开课 - 弥尔顿课程节选

And they actually did a really large study on children who were raised in gay or lesbian families,

他们确实对同性恋家庭里长大的孩子做了大量研究，

给我结婚的自由 - SpeakingMax英语口语达人

Both Guillory and Angus Fletcher are examining the troubled relation of Milton to one of his favorite poets.

无论是古伊洛还是安格斯弗莱彻,他们都在研究弥尔顿最爱的一首诗中和他相关的问题。

耶鲁公开课 - 弥尔顿课程节选