第十七条 国家加强原子能领域科学技术规划计划的衔接，完善科学技术资源、技术开发需求的交流机制，发挥市场配置资源的作用。
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。关于这个话题，WPS官方版本下载提供了深入分析
Card trading — Trade Pokémon cards with other players and get expert tips on how to play from event leaders.
* @param arr 待排序数组