本文提出了三维灰色地理信息系统（3DGGIS）理论，从基础存储层、技术支撑层和专题决策层等方面详细论述了研究内容。
The author gives the research hierarchy of 3DGGIS and dwells on the contents of basic model lever, middle technical lever and high thematic lever.
这次涉及世界环保问题专题研讨会的成功举办表明增强环保意识已取得中国决策层的高度重视。
The success of the forum heightened the consciousness of Chinese top decision makers on the need for environmental protection.
2005年开始，我们还以南京师范大学附属中学为试点，开设了“系统思考和决策试验”的专题课程。
Since 2005, we have taken the High School Affiliated to Nanjing Normal University as the experimental unit, and have set up a series of courses on "System Thinking and Decision Test".
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