write off
  草草寫成;寫信寄出;註銷,一筆勾銷
  write off
       v 1: concede the loss or worthlessness of something or somebody;
            "write it off as a loss"
       2: write something fluently, and without hesitation
       3: cancel (a debt)
       4: reduce the estimated value of something; "For tax purposes
          you can write off the laser printer" [syn: write down]