既可表示可數(shù)也可以表示不可數(shù)。表示交通這個(gè)大概念時(shí)為不可數(shù)名詞。eg. the government invest a lot to improve the transportation。表示不同的交通方式時(shí)為可數(shù)名詞。

拓展

transportation和traffic的區(qū)別

traffic主要指交通（狀況）即流動(dòng)中的車輛或行人。如Many residents in beijing are likely to welcome efforts to improve traffic;transport 是具體意義上的運(yùn)輸、運(yùn)送。如He often has boxes of samples to transport / Transport (交通工具）has long been scarce;transportation是抽象意義上的運(yùn)輸。如Even the transportation networks are maintained by farms.另transport是可數(shù)名詞，transportation是不可數(shù)名詞。