improvise [ˈɪmprəˌvaɪz]

例句:

• They show no disposition to improvise or to take risks.
  他们不愿意临时凑合或冒险。
  
• Sometimes I improvise and change the words because I forget them.
  有时，我临场发挥改了词，因为我把原来的词给忘了。
  
• I then begin to improvise melodies vocally.
  接着我开始哼起即兴创作的旋律。
  
• He was able to improvise the most amusing little tunes.
  来自J. B. Priestley
• Soon, however, he began to improvise comic monologues.
  来自NEWYORKER
• Don't assume that anyone can improvise being a change manager.
  来自WSJ