bus，train,ship,airplane advabtages and disadvantages

With the invention of the automobile the age of transportation shifted into another gear. Quickly it became
possible for people to travel more comfortably and conveniently to destinations near and far, and the figurative
world moved closer together. Trucks carried cargo across countries and soon became serious competition for trains
and ships. As a result, food and other consumer goods have become available even in remote areas, overall living
standards have improved, and the automobile industry, which has grown fantastically over the course of the past
century, employs millions of workers worldwide.

公共汽车，火车，船舶，飞机advabtages和缺点