儿童游戏的文化研究主要集中在概念和经验领域，并围绕性别差异、父母影响、游戏缺失等问题展开。
The cultural studies on childrens play abroad concentrate primarily on conceptual work and empirical work, and around issues like gender differences, parents influence, play deficiency, and so on.
他们还需要掌握数据库的概念或具有DBA的经验，以便在设计解决方案时能够理解源和目标数据库之间的蕴涵关系。
They also need to have knowledge of database concepts or DBA experience in order to understand the implications for the source and target database when designing this solution.
随着第三世界这个过时概念的终结，第一世界必须向观念和经验的竞争打开自己的大门。
With the end of the outdated concept of a Third World, the First World must open itself to competition in ideas and experience.
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