unusable是什么意思？

unusable

英[ˌʌnˈju:zəbl] 美[ʌnˈjuzəbəl]

• adj. 不能用的；

例句

• 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.
• Bombing had made roads and railways unusable. 轰炸导致公路和铁路都无法通行。
• To saturate with water and make soggy or unusable. 吸取过量用水浸透使湿润或不能用.
• If this situation should occur, the fram would become unusable. 如果出现这种情况, 框架就成为无用的了.
• 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.

英语四级真题

Many professors require that their students use only the latest versions in the classroom, essentially rendering older texts unusable.
出自-2013年6月阅读原文

柯林斯高阶英汉双解学习词典释义

• ADJ
  无用的；不能用的
  Something that is unusable is not in a good enough state or condition to be used.
  例句
  Bombing had made roads and railways unusable. 轰炸导致公路和铁路都无法通行。

英英词典释义

• Adjective
  1. impossible to use
  2. not able to perform its normal function

行业词典

• 计算机： 【修】不可用；