- a duct that provides ventilation (as in mines)
同义词：air passage, air duct, airway
- a designated route followed by airplanes in flying from one airport to another
同义词：air lane, flight path, airway, skyway
- the passages through which air enters and leaves the body
同义词：respiratory tract, airway
- a commercial enterprise that provides scheduled flights for passengers
同义词：airline, airline business, airway
