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。

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

youdao

作为一名专注于猿类和猴子研究的动物学家，我一直在研究为什么人类会进化成裸猿，以及为什么世界各地的人们皮肤会有这么多不同的色调。

As a zoologist focusing on the studies of apes and monkeys, I've been studying why humans evolved to become the naked ape, and why skin comes in so many different shades around the world.

youdao

我一直在研究这种可能性，我认为我们应该试一试。

I've been studying the possibility and I think we should give it a go.

youdao

This one I learned about in my own research about 20 years ago, and it never ceases to amaze me.

这是在我自己的研究中发现的,大概20年前，它一直让我很吃惊。

麻省理工公开课 - 固态化学导论课程节选

The mad scientist has kidnapped you and he says: I've been working on mind transfer machines.

一个疯狂科学家绑架了你，他说：,我一直在研究意识转移机器。

耶鲁公开课 - 死亡课程节选

For weeks I've been investigating the murders with a certain morbid fascination.

几个星期以来,我一直在研究变态杀人。

哈佛公开课 - 计算机科学课程节选