cor·ri·dor /ˈkɔrədɚ/
  走廊,通道
  Cor·ri·dor n.
  1. Arch. A gallery or passageway leading to several apartments of a house.
  2. Fort. The covered way lying round the whole compass of the fortifications of a place. [R.]
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  corridor
       n : an enclosed passageway; rooms usually open onto it