- 子节点i的父节点: (i-1)/2
到2030年，实现高校科普工作全覆盖，高校科普工作体系更加完善，高校科普地位作用更加凸显，科学素质和能力培养导向更加鲜明，高校社会化科普服务效能更加彰显，服务国家创新驱动发展的贡献度进一步提升。
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next empty line. Finally, the 3618 was a "medium-speed" printer, meaning 155 lines per minute.
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