officiate

officiate at a marriage

主持婚礼

to officiate at a ceremony

主持仪式

officiate as best man

做男傧相

three judges will officiate at the two Grands Prix.

三位评判员将负责两项国际汽车大奖赛。

he baptized children and officiated at weddings.

他给孩子礼，也主持婚礼。