VOA慢速英语:交通堵塞有办法解决吗？

rank – n. a position in a society, organization, group, etc.

congestion – adj. too full or crowded with something, like vehicles

commuter - n. a person who travels regularly to and from a place and especially between where you live and where you work

urbanization – n. the process by which towns and cities are formed and become larger as more and more people begin living and working in central areas

location – n. a place or position

freight – n. goods that are carried by ships, trains, trucks, or airplanes