Faced with the large mounts of increasing spatial data, a terminal user has more difficulty in understanding them without the helpful knowledge from spatial databases.
面对持续增长的海量空间数据，用户难以在没有知识辅助的情况下完全理解数据。
Faced with the large mounts of increasing spatial data, a terminal user has more difficulty in understanding them without the helpful knowledge from spatial databases.
面对持续增长的海量空间数据，用户难以在没有知识辅助的情况下完全理解数据。
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