master of ceremoniesn.（名词）pl. masters of ceremonies 【复数】
A person who acts as host at a formal event, making the welcoming speech and introducing other speakers.（正式场合的）典礼官、司仪、主持人：指一个在正式场合上以主人身份出现的致欢迎词和介绍其他演讲者的人
A performer who conducts a program of varied entertainment by introducing other performers to the audience.节目主持人：介绍其他表演者给观众（听众）的表演者