bush·whack /ˈbʊʃˌhwæk, ˌwæk/
  (v.)砍□樹林前進;奇襲
  bushwhack
       v 1: wait in hiding to attack [syn: ambush, scupper, waylay,
             lurk, ambuscade, lie in wait]
       2: live in the bush as a fugitive or as a guerilla
       3: cut one's way through the woods or bush