moderator

      调解人；调停人a person whose job is to help the two sides in a disagreement to reach an agreement

      会议主持；辩论会主席a person whose job is to make sure that a discussion or a debate is fair

      评分监督a person whose job is to make sure that an exam is marked fairly

      （论坛等的）管理员，版主a person who is responsible for preventing offensive material from being published on a website

      长老会会议主席a religious leader in the Presbyterian Church who is in charge of the Church council