She liked to play the roles of strong women.

VOA: special.2009.09.20

His career, where he attempted many times to play roles that were different from his Vulcan nature, stalled until finally many years later he gave up and wrote another book called I Am Spock where he finally conceded to the fundamental attribution error.

在他的演艺生涯中，他多次想扮演,不同于Vulcan人特征的角色时，都没演成，终于很多年以后,他放弃了，并写了一本书《我是Spock》,他终于在基本归因错误面前让步了。

耶鲁公开课 - 心理学导论课程节选

So realize you don't have to get it right the first time, but you have to listen and watch to what actually those problems are and that is one of the roles your teaching fellows play.

请认识到，并不是要你第一次就把事情搞对，但是你必须听听，看看,问题是到底什么，这也是你们的助教,扮演的一个角色。

哈佛公开课 - 计算机科学课程节选

In fact,we...look for early signs . (OMITTED) Dr.Ahmed says the government and the public both have roles to play in treating the disease.

VOA: standard.2010.06.16

That's some sense of the spectrum of magazines that are coming out, and all with different roles to play in this culture and that position their writers and poets and artists associated with them in different ways.

对于设定即将出版的杂志的基调，以及它们在文学发展中扮演的不同角色,作家诗人和艺术家们以不同方式与之相连的地位,都具有一定的意义。

耶鲁公开课 - 现代诗歌课程节选

These signaling proteins play important roles in determining how many cells differentiate down particular pathways and they turn out also to be very useful for treating diseases of those pathways.

这些信号蛋白在决定特定分化路径上,有多少细胞在分化时起着重要作用,且在治疗疾病方面也很有用,同样也是利用这些机制

耶鲁公开课 - 生物医学工程探索课程节选