officiate detail充当裁判
officiate as担任
officiate at主持
officiate at a marriage主持婚礼
officiate as best man做男傧相
officiate at funeral主持丧事
officiate as host做东道主
to officiate at a ceremony主持仪式
V-I（不及物动词） When someone officiates at a ceremony or formal occasion, they are in charge and perform the official part of it. 主持(仪式)
Bishop Silvester officiated at the funeral.
西尔韦斯特主教主持了葬礼。
V-I（不及物动词） When someone officiates at a sports match or competition, they are in charge and make sure the players do not break the rules. (在体育比赛中)担任裁判
He will officiate at the next Bears' game.
他将担任下一场大力士赛的裁判。