英语翻译各类在线翻译服务都不太准确,求懂英语的人士帮忙连贯的翻译出来：我市是一个拥有700万人口的大城市.城市交通拥堵一

My city is a big one with a population of 7 million.The traffic jam is a problem troubling us all the time.The cause of the jam is as following:
Due to the historical reason,the roads are very narrow with an unreasonable layout.
The administration means is falling behind and the management level is low.
The public transport can not meet the needs of the citizens who want to take the public transportation.
The citizens are lacking of the awareness of the law concerning the maintenance of the city traffic.occupying the road and crossing the road at will are very serious.
Therefore,in order to solve the problem of the traffic jam in our city,we must mobilize the power of the whole society.Only the combined efforts can the target be achieved!
 
供参考.