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leading a meeting; presiding over a meeting; officiating at a ceremony; chairmanship
chairman; presenter; host; moderator; master of ceremonies
人前で話すのが得意な彼女は結婚式の司会を務めた。
She served as the MC at the wedding.
経験豊富な司会者が上手にイベントを盛り上げた。
The host livened up the event.
彼が今日の司会を務める。
He will serve as today's emcee.