1. 即席作成：extemporeon-the-spot 即席 | extemporization 即席作成 | extemporization 即兴之作
2. 即席演说：temperate 节制的 | extemporization 即席演说 | temporize 见风使舵 顺应时世
3. 即兴之作：extemporization 即席作成 | extemporization 即兴之作 | extemporizationextemporizeextemportize 即席演说
noun
1. extemporization的意思
1. a performance given extempore without planning or preparation
Synonym: extemporisation improvisation