officiate /a'fijieit; a'fiji.et/ w [VP2A, C, 3A] ~ (as) (at), perform the duties of an office or position: 執(zhí)行職務(wù)： ~ as chairman; 擔(dān)任主席; ~ as host at a dinner party; 作宴會的主人; ~ at a marriage ceremony, (of a priest) perform the ceremony. (指神父) 主持結(jié)婚儀式。