Though funding from the IMF,the World Bank, the United States and other donors has made it possible to subsidize treatment and prevention methods in Africa, Dr.Rwagacondo says that local governments also have a key role to play in mobilizing their populations and eradicating malaria in the long term.

VOA: standard.2009.04.25

I think engineers have a role to play in that, but it's not sort of classical Biomedical Engineering in the way that developing an artificial heart is where you can see that.

我认为工程师们,在其中扮演了重要角色,但它又不像传统生物医学工程那样,去研究人造心脏之类,实实在在的东西

耶鲁公开课 - 生物医学工程探索课程节选

My role model... wow. I used to have a role model. I really don't at this point.

我的榜样……哦，我过去曾经有个榜样，但现在，我还真没有。

对你而言，钱是？ - SpeakingMax英语口语达人

"For instance,we know that mental illness disorders like depression or alcohol use disorders play a major role in European countries, for instance" "But,we have to also look at Asian countries where impulsiveness plays a much more important role, which is that suicide can happen on the spur of the moment."

VOA: standard.2009.09.10

So although holiness derives from god, humans have a crucial role to play in sanctification, in sanctifying the world.

尽管神圣源于神灵，人类在将世界神圣化的过程中，扮演者重要的角色。

耶鲁公开课 - 旧约导论课程节选

The government will have to play a leading role.

政府需要扮演主要角色。

普林斯顿公开课 - 国际座谈会课程节选

And what happened is, over a 30-year or so period, the industry really shifted to be one where industry standards started to come into play, the customers started to have a bigger role.

经过了30年左右，这个行业发生了变化,出现了产业标准，消费者的角色也越来越重要。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选