1. role

1. He denied any role in the robbery.
    他否认曾参与这起抢劫案。

2. He played the role of the old king in our school play.
    他在我们学校演的剧中扮演老国王的角色。

3. She played the leading role in the school play.
    她在学校的戏里扮演主角。

1. 角色角色：9.4 角色 角色(role)就是一组特权,它可以分配给一个用户或其他角色. 角色的优点和特性可以总结为如下几点:● 并不是一次一个地将特权直接授予一个用户,而是先创建角色,向该角色授予一些特权,然后再将该角色授予多个用户和角色. ● 在增加或删除一个角

2. 成员角色：1.CSCW系统模型和体系结构,CSCW系统的基本组成元素可归纳成4类:成员角色(role)、共享对象(shared object)、协作活动(activity)和协作事件(event). 而一般认为CSCW系统有四层模型:开放系统互连环境、协同工作支撑平台、协同工作应用接口、各种CSCW应用系统. 如下图所示:

1. 作用;地位;职位;角色
    If you have a role in a situation or in society, you have a particular position and function in it.

    e.g. ...the drug''s role in preventing more serious effects of infection...
           这种药物在防止感染加重方面的作用
    e.g. Both sides have roles to play.
           双方都各有自己的角色。

2. (电影、戏剧或歌剧中的)角色
    A role is one of the characters that an actor or singer can play in a film, play, or opera.

    e.g. She has just landed the lead role in The Young Vic''s latest production...
           她刚刚获得在小维克剧院上演的最新作品中出演女主角的机会。
    e.g. Shakespearean women''s roles were originally written to be played by men.
           莎士比亚笔下的女性角色在创作之初是打算由男性来扮演的。

1. the actions and activities assigned to or required or expected of a person or group

    e.g. the function of a teacher
           the government must do its part
           play its role

    Synonym: functionofficepart

2. normal or customary activity of a person in a particular social setting

    e.g. what is your role on the team?

3. what something is used for

    e.g. the function of an auger is to bore holes
           ballet is beautiful but what use is it?

    Synonym: functionpurposeuse

4. an actor''s portrayal of someone in a play

    e.g. she played the part of Desdemona

    Synonym: charactertheatrical rolepartpersona