全球城市产业结构的变化导致了劳动力需求结构的变化。全球城市对专业和非专

Changes in the global urban industrial structure led to changes in the demand structure of the labor force. Global urban demand for professional and non-professional workforce while increasing. High-level services and general services co-exist in cities around the world. Advanced services sector is a high-income professional services, and most of the services sector is generally low-skilled, low-income services. This has led to changes in the industrial structure of the global social polarization and urban labor market duality (short et al., 1993, p. 207). Immigration to meet the global urban demand for professional and non-professional labor force, abundant labor resources has brought a dual labor market cities around the world.

全球城市产业结构的变化导致了劳动力需求结构的变化。全球城市对专业和非专业劳动力的需求同时增加。高层次服务业和一般服务业在全球城市共存。先进服务业是一个专业的高收入服务业，而一般服务业大多是低技能、低收入的服务业。产业结构的这种变化导致了全球城市劳动力市场的社会两极分化和二元性(short等人，1993年，第207页)。移民满足了全球城市对专业和非专业劳动力的需求，为全球城市的双重劳动力市场带来了充足的劳动力资源。

The change of global urban industrial structure leads to the change of labor demand structure. The demand for professional and non professional labor force in global cities is increasing at the same time. High level service industry and general service industry coexist in global cities. Advanced service industry is a professional high-income service industry, while the general service industry is mostly low skilled, low-income service industry. This change in industrial structure has led to social polarization and duality in the global urban labor market (short et al., 1993, P. 207). Immigrants meet the demand of global cities for professional and non professional labor, and bring sufficient labor resources to the dual labor market of global cities.