1. Fatigue impaired their judgment.
   疲劳削弱了他们的判断力。
2. Sign instructions to a hearing-impaired teammate.
   用手势向一个听力不健全的队友传达指示
3. His impaired foot pained him sharply.
   他那只受伤的脚使他感到剧烈的疼痛。
4. His illness has impaired his efficiency.
   生病降低了他的效率。
5. To make imperfect or defective;impair.
   使不完美或者有缺陷;损害

　2个形容词解释