剑桥高阶英汉双解词典 - improvise
/'ɪm.prə.vaɪz/
verb [I or T]
* to invent or make something, such as a speech or a device, at the time when it is needed without already having planned it
临时做;即兴做
1. I hadn't prepared a speech so I suddenly had to improvise.
我没有准备演讲,所以突然之间我只好即兴讲几句。
2. To sleep on, we improvised a mattress from a pile of blankets.
为了能有地方睡觉,我们临时用一堆毯子作床垫。
* When actors or musicians improvise, they perform without fixed speech or music, making it up as they perform it
(演员)即兴表演;(音乐家)即兴创作
1. During certain scenes of the play there isn't any script and the actors just improvise (the dialogue).
这出戏有几场没有剧本,演员就即兴表演(对白)。