superhighway,freeway,highway,expressway 有什麼分别?

superhighway,freeway,highway,expressway 有什麼分别? highway superhighway interstate freeway expressway turnpike有 highway/ expressway/ thruway /freeway有什么区别? freeway.highway .expressway.这些都有什么区别,谁给讲讲 expressway和freeway的区别? expressway,highway 有什么区别? highway,freeway,metro,subway区别 expressway与highway有什么区别 highway 和 expressway 有什么区别（知道的进） expressway什么意思? highway,highway 歌词 freeway 什么意思?