交通工具

例句：

1. 1. The train is themost convenient way to travel long distances.
   火车是长途旅行最方便的方式。
2. 2. Hedecided to take a bus to work insteadof driving his car.
   他决定乘公共汽车去上班，而不是开车。
3. 3. The newsubway system will greatly improve the efficiencyof public transportation.
   新的地铁系统将大大提高公共交通的效率。