impromptuadj.即席的；即兴的，临时的adv.即兴地，无准备地n.即兴之作；即兴曲impromptu interview即兴采访impromptu accompany即兴伴奏impromptu community即时社区impromptu observatio没有事先安排的观察Impromptu accompaniment即兴伴奏impromptu spoken language即兴口语Impromptu in A flat major降A大调即兴曲Impromptu piano accompaniment钢琴伴奏impromptu accompaniment of piano即兴伴奏