prolonged [prəˈlɔ:ŋd]

例句:

• Goodyear could be vulnerable in a prolonged economic slump.
  经济长期疲软可能会对固特异公司造成影响。
  
• The fall in inflation is the silver lining of the prolonged recession.
  通货膨胀的下降是长期经济衰退中的一线转机。
  
• Prolonged war had stretched the realm beyond its capacity.
  来自WSJ
• Droughts in this area are frequent and often prolonged.
  来自BBC
• Conflict, prolonged drought and famine were to blame.
  来自VOA
• Paul prolonged his education with six years of advanced study in English.
  保罗延长了他的受教育时间，打算花6年时间深造英语。