by ear

• Just play it by ear .
  只要随机应变就是了。
• I have had no time to prepare for this meeting , so i will have to play it by ear .
  我没有时间准备这次会议，所以只好有什么谈什么。
• By ear play music from memory without having seen it printe
  凭记忆,不看乐谱
• Facing his enemy , he had to play it by ear
  面队敌人，他只有随机应变了。
• Peter can play the most difficult piano music by ear
  彼得能不看乐谱弹奏最难的钢琴曲。
• Facing his enemy , he had to play it by ear
  面对敌人，他只有随机应变了。
• John plays most of his music by ear
  约翰完全靠声音弹奏大多数的音乐。
• There are no set working hours ; we ' ll play it by ear
  我们没有规定的工作时间，看情况而定。
• John plays all of the songs by ear
  约翰完全靠声音弹奏所有的歌。
• She can play the most difficult piano music by ear
  她能不看乐谱，光凭听觉记忆弹奏最难的钢琴曲。