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"填挖方模式" 新的地形将会如何被改变. 可以进行填方，挖方或者两者结合.
下图展示了三者的区别 - 三者在俯视模式下有着相同的平面区域范围.
挖方
填方
填方和挖方
挖方
填方
填方和挖方
挖方
填方
填方和挖方