We write prescriptions." For years,nurse practitioners have been playing a larger role in the nation's health care, especially in regions with few doctors.

VOA: standard.2010.05.14

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

Because these things are unpaired, we have already seen how unpaired electrons play a role in the Stern-Gerlach experiment.

因为它们都是未成对的，我们已经发现,在Stern-Gerlach实验中,未成对电子扮演怎样一个角色了。

麻省理工公开课 - 固态化学导论课程节选

After their talk on the sidelines of the U.N. General Assembly meeting in New York, Mr.Obama said the United States and Japan have a major role in working with other countries toward economic recovery.

VOA: standard.2009.09.23

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

She says the pictures could play a role but one would have to be in a predisposed state then one may see the morbid murals with very different eyes, which could adversely affect someone.

VOA: standard.2010.07.10

Chronic diseases have a major role in the healthcare costs, so if you look at these chronic diseases, heart disease, stroke, cancer and Diabetes we find that seven out of ten of all deaths are now due to chronic diseases, whereas, it was a very small fraction in 1900.

慢性疾病是医保费用中的一个大头,你看看这些慢性疾病,心脏病,中风,癌症和糖尿病,就会发现如今十分之七的死亡,都是源于慢性疾病,然而,这在1900年仅占很小一部分

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

"If there was a hall of fame for budget directors,then Jack Lew surely would have earned a place for his service in that role under President Clinton, when he helped balance the federal budget after years of deficits."

VOA: standard.2010.07.13

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

"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

"I think that there will be a refocusing of how the UK can operate within Pakistan and Afghanistan, but also there will be some serious questions about whether or not the UK can maintain this expeditionary role" TV debates, a first in British politics, have thrust the outsider Nick Clegg of the Liberal Democrats into the role of kingmaker in a close election.

VOA: standard.2010.04.30