An increasing number of experts believe that migrants will exert positive effects on construction of city 。 However， this opinion is now being questioned by more and more city residents， who complain that the migrants have brought many serious problems like crime and prostitution.
越来越多的专家相信移民对城市的建设起到积极作用。然而，越来越多的城市居民却怀疑这种说法，他们抱怨民工给城市带来了许多严重的问题，象犯罪和卖淫。
Many city residents complain that it is so few buses in their city that they have to spend much more time waiting for a bus， which is usually crowded with a large number of passengers.
许多市民抱怨城市的公交车太少，以至于他们要花很长时间等一辆公交车，而车上可能已满载乘客。
There is no denying the fact that air p
