unusable [ʌnˈjuzəbəl]

例句:

• Bombing had made roads and railways unusable.
  轰炸导致公路和铁路都无法通行。
  
• The point of degradation, due to attenuation or distortion, at which a signal becomes unusable.
  由于衰减或失真使得信号变得不能使用的那个退化点.
  
• Mortality is the number or volume of trees periodically rendered unusable through natural causes.
  枯损是一类由于自然原因而定期变得无用的林木株数或材积.
  
• They practiced agriculture on land that is unusable for farming due to climate.
  来自SA
• The virus can corrupt infected files, however, and make them unusable, according to Viveros.
  来自CNN
• The reactor suffered a partial meltdown which left it unusable, and it was subsequently decommissioned and disassembled.
  来自SA