I was a research student at that time with no other duties except research.

我当时是一个研究生，除了做研究没有其它的义务。

youdao

The Fulbright Foreign Student Program helps graduate students and young professionals do research and study in the United States for a year or longer.

VOA: special.2009.02.12

So, you can either pick up an old issue or I put the link on the website, too. And that's not just about his research, it's also about some of his memories as a student and advice to all of you.

你们可以找到报纸或者,我把网站放上去，那不仅是,关于他的研究的，也是一些,他对学生时代的回忆和对你们的忠告。

麻省理工公开课 - 化学原理课程节选

I'm also a graduate student. I go to the New School for Social Research which is, like, right there.

我也是一名研究生，就读于社会研究新学院，学校就在那边。

纽约的景点 - SpeakingMax英语口语达人

Research student Emily Mockford visited 20 towns and cities in the UK to capture the bird song.

BBC: Birds in cities 'singing louder'

From 1986 to 1987 David worked as research student at Oxford University's Department of Atmospheric Physics, specifically working on the ozone hole and global warming.

BBC: Weather - David Braine - BBC South West

In the course of this reincarnation story, Beard manages to have his wife's research-student lover slip on a polar-bear rug, hit his head and die.

ECONOMIST: How not to write ��state-of-the-nation�� fiction