exit barriers 退出壁壘exit area 出口截面面積exit (n.) exit n. 出口，通道；退場 vi. 退出；離去exists v.存在；生存；活著existingness 既存性existingdestinationfile 已存在的目錄文件時existing-railway 既有線existing state 目現(xiàn)狀況existing residential building [土木建筑工程]既有住宅既有建筑既有居住建筑existing reinforced concrete structure [土木建筑工程]在役鋼筋混凝土existing product 現(xiàn)有產(chǎn)品existing preferential tariff [經(jīng)濟學(xué)]現(xiàn)行特惠關(guān)稅現(xiàn)存特惠關(guān)稅existing market 現(xiàn)有市場existing debt 未清償債務(wù)existing customs valuation system [法學(xué)]現(xiàn)行估價制度existing customer ?；蓊櫩?/p>existing controller 現(xiàn)有控權(quán)人existing condition 現(xiàn)存條件existing circumstances n. 現(xiàn)狀