title: NowWallStreetisbeingreshapedbyth? 
desc: Now Wall Street is being reshad by the crisis over mortgage-related securities. The markets are unable to place a value on them. So banks and other investors are unable to find a buyer except possibly the government. 
   请问place a value on 是什么意思?
answer:  
  
  保住它们的价值
  
  不过我个人认为不是保价，而是定价。