improvisation

名词 improvisation:

1. a creation spoken or written or composed extemporaneously (without prior preparation)
2. an unplanned expedient
   同义词：temporary expedient
3. a performance given extempore without planning or preparation
   同义词：extemporization, extemporisation

1. An early style of jazz characterized by free group improvisation and an accented two-beat rhythm.
   低级酒吧爵士音乐一种早期的以自由团体演唱，重双去节奏为特点的爵士音乐
2. The oboist is well known for his improvisation.
   这位双簧管吹奏者以即兴演奏而著名。

im.prov.i.sa.tion

n.（名词）
The act of improvising.
即兴创作
Something improvised, especially a dramatic skit.
即兴作品：即兴而作的东西，尤指戏剧小品