roles

柯林斯词典

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. 到目前爲止，科學家們幾乎沒有該葯物在防止更嚴重的感染後果的功能的明確証據。
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。