improvising

v.即兴创作；即兴表演；临时准备

Akel says this style of acting required the crew to improvise as well. 称这种演出方式要求剧组人员都要即兴创作。

It is much easier to improvise a song than it is to improvise a symphony. 即兴创作一支歌曲比即兴创作一部交响曲要简单得多。