There is a combination of two things that are important: culture and space.
文化与空间这两个重要方面结合了起来。
GIS is the combination of the space and the same description.
GIS地理信息是空间属性与描述同性的结合体。
Thus make a small search space and avoid the creation of the combination explosion.
这样，搜索空间小，避免了组合爆炸的产生。
Thus make a small search space and avoid the creation of the combination explosion.
这样，搜索空间小，避免了组合爆炸的产生。
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