Although rural emigrants contribute greatly&nb sp;to the economic growth of the cities, they may inevitably bring about many negative imp acts.
Although rural emigrants contribute greatly&nb sp;to the economic growth of the cities, they may inevitably bring about many negative imp acts.
尽管民工对城市的经济发展做出了巨大贡献，然而他们也不可避免的带来了一些负面影响。