indecipherable [ˌɪndɪˈsaɪfərəbəl]

例句:

• He uttered little indecipherable sounds.
  他声音很小，听不清楚。
  
• Maggie'swriting was virtually indecipherable.
  玛吉的笔迹几乎无法辨认。
  
• The coded message was indecipherable.
  这份用密码写的消息译不出来.
  
• However, on some tracks, such as "Somewhere", the lyrics become frustratingly indecipherable.
  来自BBC
• He, being English, would express his own feelings more subtly, by mumbling something indecipherable under his breath.
  来自THETIMES
• There was a general noise at the edges you'd begun to detect, akin to indecipherable ballpoint desktop gougings.
  来自NEWYORKER