leeway  
noun [ U ] uk/ˈliː.weɪ/ us/ˈliː.weɪ/
  (FREEDOM)      
  自由空间,自由度,余地
freedom to act within particular limits
  Local councils will be given some leeway as to how they implement the legislation. 地方议会实施该项立法会有一定的自由度。 
   (PERIOD OF TIME)      
 UK富余时间,多余时间;浪费的时间 
an amount or period of time that has been lost or wasted
  There is a lot of leeway to make up after the holiday period. 假期过后有很多浪费掉的时间需要补上。