核心国和边缘国之间的经济差异是个问题吗？
没有提到任何经济差异。
文化差异是导致社会经济差异的重要原因。
The cultural difference is the important reason of the social economy difference generating.
有些人认为经济上的差异会影响友谊。
Some people think that financial disparity affects friendship.
不同经济水平组NC、PC的差异都有统计学意义（P<0.001）。
The difference of PC and NC in different economic level group had statistical significance(P<0.001).
另一个大的差异是中国是一个巨大的经济体。
受各种因素的影响，人口增长的经济效应可能依时间、地点而有明显的差异。
With the change of time and place, the economic effects of population growth will change.
社会文化、经济、法律、环境等差异影响到对精神卫生服务的获取和对住院服务的选择。
Social, cultural, economic, legal and environmental factors impact the access to mental health services.
社会文化、经济、法律、环境等差异影响到对精神卫生服务的获取和对住院服务的选择。
Social, cultural, economic, legal and environmental factors impact the access to mental health services.
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