In shanghai,there're mainly four means of transportation, the underground,taxis,buses and elctric bikes,
The underground is much faster than taxis and buses.
Buses are the cheapest but the slowest of the four. Taxis run more quickly than buses, bus they are more expensive,
now,more and more people choose to use electric bikes.
The electric bike is both and mobile, it also saves money,it is the most convenient means of transportation.
在上海，有四中交通工具，地铁，公交车，汽车，电动车，地铁是最快比汽车和小轿车.
公交车是最便宜但是也是最慢的在这四种交通攻击点当中，出租车是比汽车快，但是也是最贵的，
现在，越来越多的人选择使用电动车.
电动车不仅能够移动，而且还是非常节约，也是目前最为方便的移动交通工具.
