空運
air freight;air transport;airlift
～救災(zāi)物資airlift relief supplies (to a stricken area)/～保險air freight insurance/～單airway bill(of lading)/～貨物air freight;air cargo/～貨物周轉(zhuǎn)量volume of air freight/～旅客周轉(zhuǎn)量volume of air passenger transportation/～企業(yè)air carrier; air transport company