Thousands were forced to migrate from rural to urban areas in search of work.

成千上万的人为了寻找工作被迫从农村涌进城市。

《牛津词典》

The problem is particularly bad in rural areas and small cities because younger populations typically migrate to big cities on China's rich eastern coast.

这个问题在农村和小城市尤为严重，这里的年轻人群通常都迁往到中国富裕的东部沿海大城市去了。

youdao

Many of the people who inhabit slums were pushed to migrate by the lack of opportunities in rural areas or their countries of origin.

很多居住在贫民窟的人由于在农村地区或原籍国缺乏机会而被迫移徙。

youdao

As more and more of its people migrate from rural to urban regions, it needs the type of job creation that will keep these new concentrations of population productively employed.

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The government aims to reduce the number of rural students who drop out or migrate to urban areas because of village school closures and mergers, China Daily reports.

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Many people must migrate for jobs, mostly from rural areas to the margins of cities and shanty towns.

BBC: By Sarah Shenker and Elinor Shields