v.执行职务；主持（仪式等）
He will officiate as chairman until a new one is appointed. 他将执行主席的职务直到任命新主席为止。
Which priest would she like to officiate at her wedding? 她想要哪一个神父主持她的婚礼?
I gives me great pleasure to officiate at today's conference. 我很高兴能主持今天的会议。
