GIS是现代地理科学与空间信息科学相结合的产物，是现代地学领域十分重要的一门分析和应用工具。
GIS is an important analysis and application tool in earth science, which is based on contemporary geography and spatial information science.
GIS是现代地理科学与空间信息科学相结合的产物，是现代地学领域十分重要的一门分析和应用工具。
GIS is an important analysis and application tool in earth science, which is based on contemporary geography and spatial information science.
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