不可数。1.N-UNCOUNT交通工具;运输工具Transportation refers to any type of vehicle that you can travel in or carry goods in.The company will provide transportation.公司会提供交通工具。【in BRIT, usually use 英国英语通常用 transport】2.N-UNCOUNT交通运输系统;公共交通(网)Transportation is a system for taking people or goods from one place to another, for example using buses or trains.Campuses are usually accessible by public transportation.通常乘坐公共交通即可到达各个校区。【in BRIT, usually use 英国英语通常用 transport】3.N-UNCOUNT运输;运送Transportation is the activity of taking goods or people from one place to another in a vehicle.The baggage was being rapidly stowed away for transportation…行李正在迅速装载等待运输。