序曲xùqǔ 1.歌剧、清唱剧、芭蕾舞剧等开场时演出的乐曲,由交响乐队演奏。也指用这种体裁写成的独立器乐曲。{overture; musical introduction to an opera, oratorio, ballet, etc., played by an orchestra; independent orchestral music composed in this style} 2.〈比喻fig.〉事情、行动的开端{prelude (to an event, action, etc.)}: 预赛获胜只是夺取冠军的～。{Winning the preliminary rounds was only a prelude to winning the championship.}