Transportation 交通運輸 The Motor Vehicle and the Highway System 汽車和公路系統(tǒng) Public Transportation 公共交通 Intercity Transportation 城際交通 Freight Transportation 貨物運輸 Commuter 通勤族 Telecommuting 信息化辦公 The Effect of Environmental Laws 環(huán)境保護法的作用 Glossary 詞匯表