很多生活在城市中的难民依靠非法或非正规的行业维持生计。
Most city refugees must eke out an existence in illegal or informal sectors of the economy.
约四分之一的城市居民生活在贫民窟或非正规住区内。
Approximately a quarter of these urban dwellers live in slums or informal settlements.
农民工绝大多数就业于城市的非正规部门。
Most of the migrant workers are employed by some informal departments in the cities.
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