雅思考試每日詞匯累積交通運輸系統(tǒng)鐵路
京滬高鐵:Beijing-Shanghai high-speed railway
實名制:real-name system
網(wǎng)上訂票系統(tǒng):online ticket-booking system
打擊黃牛:foil/crack down on scalpers
試運行:trial operation
預檢:preliminary check
緩解交通:ease the transportation strain
大都市:metropolis
