representative of a residue class

例句：

1. 1.The company's board of directorsis made up of several representatives from differentdepartments.
   公司的董事会由来自不同部门的几位代表组成。
2. 2. He was appointed as therepresentative of the international committee.
   他被任命代表国际委员会。
3. 3. As a representative of the environmentalgroup, she spoke at the conference.
   作为环保组织的代表，她在会议上发言。