hole up
  躲藏,窩藏,住宿,留宿;冬眠
  hole up
       v 1: remain secluded or in hiding; "He is writing his book and is
            holing up in his study"
       2: score a hole in one
       3: sleep during winter; "Bears must eat a lot of food before
          they hibernate in their caves" [syn: hibernate] [ant: estivate,
           estivate]