by ear

• Life is like music . it must be composed by ear , feeling and instinct , not by rule
  人生如音乐,要用听觉,感情和本能谱写,不能只凭规律
• Occluded - ear simulator for the measurement of earphones coupled to the ear by ear inserts
  用耳塞耦合到人耳的耳机测量用塞耳模拟器
• I have no idea what they ' re going to say , so i ' ll have to play it by ear
  （我一点不知道他们将会说些什么，所以我只好见机行事。 ）
• Play it by ear
  用看谱随机应变
• I ' ve had no time to prepare for this meeting , so i ' ll have to play it by ear
  （我没有时间来准备这次会议，所以只好有什么谈什么。 ）
• Occluded - ear simulator for the measurement of earphones coupled to the ear by ear inserts
  测量两耳插塞件联结耳机用的闭合式耳朵模拟器
• B : i don ' t know . i think we should just play by ear and have a good time out today
  不知道。我想我们应该(出来了)就好好的玩,看情形再说?
• Life is like music . it must be composed by ear , feeling and instinct , not by rule
  人生如一首乐曲,要用乐感,感情和直觉去谱写.不能只按乐律行事
• Life is like music , it must be composed by ear , feeling and instinct , not by rule
  生活就像音乐，必须用耳朵、感情和本能来谱写，而不是靠规则。