moderator
n. 仲裁人,调解人;<英>(试卷)审核员,监考人;(会议或讨论的)主持人;长老会教长;留言板版主,聊天室版主;慢化剂,缓和剂; 长老会教长
复数 moderators
例句
She also acted as moderator or leader at a UNICEF event last December.
去年12月,她还担任了联合国儿童基金会一次活动的主持人。
Moderator: Thank you very much.
主持人:非常感谢。
They answered questions from a moderator and didn't address each other.
三位候选人回答了主持人的问题,但没有互相发表言论。