dug·out /ˈdʌgˌaʊt/
 防空壕,獨木舟
 Dug·out n.
 1. A canoe or boat dug out from a large log. [U.S.]
    A man stepped from his slender dugout.   -- G. W. Cable.
 2. A place dug out.
 3. A house made partly in a hillside or slighter elevation. [Western U.S.]
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 dugout
      n 1: either of two low shelters on either side of a baseball
           diamond where the players and coaches sit during the
           game
      2: a canoe made by hollowing out and shaping a large log [syn:
         dugout canoe, pirogue]
      3: a fortification of earth; mostly or entirely below ground
         [syn: bunker]