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活动背景:在社会的现代化发展进程中,越来越多的服务性行业出现在幼儿的生活环境里,对这些工作人群的大量接触,使幼儿对于
Background: In the process of social modernization, more and more service industries appear in young children’s living environment. The large number of contacts with these working people make young children