他已经对再生能源进行了广泛研究。

He has carried out extensive research into renewable energy sources.

《牛津词典》

对这种疾病已进行了广泛研究。

Extensive research has been done into this disease.

《牛津词典》

她最近完成了一项对35岁前开始政治生涯的当选的官员的广泛研究。

She recently completed an extensive study of elected officials who began their political careers before the age of 35.

《柯林斯英汉双解大词典》

As these tools became applied more and more widely, we learned more about how human physiology worked.

当这些工具应用的越来越广泛时,我们对人类生理运作的了解也逐渐加深

耶鲁公开课 - 生物医学工程探索课程节选

So, you have this tremendous continuity between the sort of the honor code that was so dominant in the Homeric world, which has now been shifted to the larger unit, which is the polis.

现在你对荣耀法则的变迁应当有所了解了,荷马时期的主流是个人英雄主义,逐渐演变成现在对更广泛的集体,也就是对城邦的担当

耶鲁公开课 - 古希腊历史简介课程节选

Now, in the world of Linux and Unix more generally, both of which are our operating systems that had been around for many, many years, Mac OS is based on one of-- one version thereof.

在Linux和Unix里更广泛，对了，这两个都是历史悠久的,操作系统，就连Mac操作系统,都是基于它的一个版本设计出来的。

哈佛公开课 - 计算机科学课程节选