短語詞組短語air passenger transportation market 客運商場Air cargo transportation 民航貨物運輸Air Cargo Transportation Business 航空貨物運輸業(yè)務(wù)air r transportation risk 航空運輸險air r transportation insurance 空運air cushion transportation 氣墊運輸air flow transportation 氣流輸送air passenger transportation 航空客運air material transportation system 航空貨運系統(tǒng) 返回 air transportation