根据《柯林斯英汉双解大词典 》：
N-UNCOUNT Transportation refers to any type of vehicle that you can travel in or carry goods in. 交通工具 [美国英语]
N-UNCOUNT Transportation is a system for taking people or goods from one place to another, for example, using buses or trains. 交通运输系统 [美国英语]
N-UNCOUNT Transportation is the activity of taking goods or people from one place to another in a vehicle. 运输 [美国英语][1]
transportation system 运输系统；交通物流系统
public transportation 公共交通，公共运输；公共交通工具
urban transportation 城市交通运输；市区运输
road transportation 公路运输
air transportation 空运；航空运输
transportation equipment 运输设备
transportation company 运输公司
transportation industry 交通运输业；交通事业
transportation cost 运输成本，运输费用
means of transportation 交通设施
water transportation 水路运输
land transportation 陆路运输