air·way /-ˌwe/
  空中航線,通風孔
  air·way /-ˌwe/ 名詞
  氣道,導氣管
  airway
       n 1: a duct that provides ventilation (as in mines) [syn: air
            passage, air duct]
       2: a designated route followed by airplanes in flying from one
          airport to another [syn: air lane, flight path, skyway]
       3: a commercial enterprise that provides scheduled flights for
          passengers [syn: airline, airline business]