dereliction  
noun uk/ˌder.əˈlɪk.ʃən/ us/ˌder.əˈlɪk.ʃən/
  (FAILURE)      
  [ C or U ]玩忽职守,渎职 
(a) failure to do what you should do
  What you did was a grave dereliction of duty. 你的所作所为是严重的渎职。 
   (IN BAD CONDITION)      
 [ U ](尤指建筑物)荒废;弃置 
(especially of a building) a state of not being cared for
  The old railway station was in a state of dereliction. 老火车站当时处于废弃状态。