play a role

基本解释

He was invited to play a role in this TV play.
他被邀请在这个电视剧里扮演一个角色。
He or she will then show you how all these things, combined, play a role in choosing a career.
然后他/她会向你解释如何将这些事情结合起来，在你择业时发挥作用。
I think this may be an extraordinary moment in history where Africa can become a continent of hope and the Bank can play a role in that.
他说："我认为，这可能是历史上一个不同寻常的时刻，使非洲成为一个希望的大陆，世行可以在这方面发挥作用。

That study asked them whether a patient's age and other illnesses might play a role in not recommending chemotherapy after surgery.
Now, it gets complicated because there are some cases where we do allow stereotypes to play a role.
但实际情况没有这么简单,因为有时候我们确实允许,把刻板印象应用到生活中。
耶鲁公开课 - 心理学导论课程节选
Now, the marriage case is extreme but Freud gives a lot of simpler examples where this sort of unconscious motivation might play a role.
婚姻是一个极端的例子,但弗洛伊德还举了很多简单点的例子,来阐释无意识动机是如何发挥作用的。
耶鲁公开课 - 心理学导论课程节选

But I do believe that emotions can and should play a role in decision-making.
FORBES: Why Emotional Decisions Aren't Always Bad