求翻译：研究哪些因素会影响城镇居民的医疗费用支出，特别是研究城镇居民在不同的医疗保障措施下医疗费用支出的特点，对于设计合理的医保制度，提升城镇居民的福利水平具有重要的现实意义。是什么意思？

Examine what factors influence the medical expenses of urban residents, especially the study of urban residents in different medical safeguards under the characteristics of medical expenses, for the rational design of health insurance system, improve the welfare of urban residents has important prac

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Which factors studies to be able to affect the cities inhabitant's medical expense disbursement, specially studies the cities inhabitant under the different medical safeguard measure the medical expense disbursement characteristic, guarantees the system regarding the design reasonable medicine, prom

Study on which factors will affect the medical expenses of urban residents, in particular the urban residents in a variety of characteristics of medical expenses under the medical safeguards, for the rational design of medical insurance system, raise the level of urban residents ' welfare is of grea

Study on which factors will affect the medical expenses of urban residents, in particular the urban residents in a variety of characteristics of medical expenses under the medical safeguards, for the rational design of medical insurance system, raise the level of urban residents ' welfare is of grea