求翻译：自愿迁移不人道历史记录的最大波改变中国城市与全球经济，在单一的一代。它也已由趋于期望的下一代和第二代移民儿童的移民来自农村，创建这些城市，艰巨的任务是什么意思？

Voluntary migration of the largest wave of inhuman history change of Chinese cities with the global economy, in a single generation. It also has been tended to expect the next-generation and second generation immigrant children of immigrants from rural areas, to create these cities, the arduous task

Voluntary migration is not the history of the greatest wave of change cities in China and the global economy, in a single generation. It also has the tendency to expect the next generation and the generation 2 immigrant children of immigrants from rural areas and create these cities, the challenge

The voluntary migration humanity historic record biggest wave does not change the Chinese city and the global economy, in sole one generation.It also by tended to the expectation next generation and the second generation of immigrant child's immigration comes from the countryside, founds these citie

Voluntary migration of inhuman history's largest wave changes in Chinese cities and the global economy, in a single generation. It also tends to look forward to next-generation and second-generation immigrant children of migrants from the countryside, creating these cities, demanding task

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