His research began with fruit flies, but over the last two decades, his focus has been on parasitic protozoa, single-celled organisms that cause major diseases.

VOA: standard.2010.04.05

His main research interests are in the areas of comparative political economy with the focus on the developing countries.

他主要的研究领域在于,对比性政治经济,特别是发展中国家的政治经济。

普林斯顿公开课 - 国际座谈会课程节选

Well, I am a Linguistics major, so I do a lot of research and kind of focus a lot of my studies on acquiring language.

我是语言学专业的，所以做了很多专注于语言习得的研究。

英语学习技巧 - SpeakingMax英语口语达人

So one of the first things that I'll argue for in terms of " healthy research is "let's also focus on what is working".

首先，我认为在健康研究方面,主要的问题是“让我们注重可行的方法。

哈佛公开课 - 幸福课课程节选

He said second psychology is a psychology that leaves the labs that draws on the research done in the labs that is important and meaningful, however,doesn't only focus on that.

他说另一种心理学就是,抛开实验室的研究,实验室研究意义重大，但不只是注重这种研究。

哈佛公开课 - 幸福课课程节选