infirmity [ɪnˈfɜ:rməti]

例句:

• We all fear disability or infirmity.
  我们都害怕伤残或体弱。
  
• Bad temper is his worst infirmity.
  坏脾气是他最大的弱点.
  
• Old age and infirmity had begun to catch up with him.
  他开始显出年老体衰的样子了.
  
• The satirist wished to enhance the infirmity of Philip.
  来自G. Downes
• Is mental infirmity an inevitable consequence of getting old?
  来自BBC
• The same constitutional infirmity plagues the president's plan.
  来自WSJ