unrecognizable [ˌʌnrekəgˈnaɪzəbl]

例句:

• His speech was difficult to understand, his signature shaky and unrecognizable.
  他的演说很难听懂，他的签名颤颤巍巍地无法识别。
  
• The unrecognizable remains of a man had been found.
  一具无法辨认的男性尸体被发现了。
  
• He was unrecognizable without his beard.
  他刮掉胡子，无人认得出他了。
  
• His face would twist itself and become unrecognizable with anger.
  来自Washington Post