roles

柯林斯詞典

1. N-COUNT If you have a role in a situation or in society, you have a particular position and function in it. 功能; 作用
Until now scientists had very little clear evidence about the drug's role in preventing more serious effects of infection. 到目前爲(wèi)止，科學(xué)家們幾乎沒(méi)有該葯物在防止更嚴(yán)重的感染後果的功能的明確証據(jù)。
2. N-COUNT A role is one of the characters that an actor or singer can play in a movie, play, or opera. 角色
She has just landed the lead role in their latest production. 她剛在他們最新的作品中取得了主角。