Since its invention, the automobile has become one of the most important means of transport in the world.
汉语大意：自从发明以来，汽车已经成为最重要的交通工具之一。
2
Cities where smog is a serious problem require better means of transport than automobile.
烟雾问题严重的城市，更需处理的是交通问题，而不是汽车。
3
Inteligent transport system (its) are now widely applied to highway military transportation in the US army, which greatly increase its automobile transportation guarantee capability.