To define the visibility of the edges, you can apply a Edit Mesh modifier to the object, change to the edge sub-object level and use the Surface Properties tools.

要定义边缘的可见性，您能运用编辑滤网修饰词于对象，变成边缘次级对象水平并且使用表面物产工具。

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For that I created a normal plane in the middle of the grass part and in edit poly mode selecting the edges I began to extrude and adjust the terrain to fit with the grass parts.

这样我就在草坪中间创建了一个标准的平面图，在编辑多边形中选择边缘，开始挤压并调整地形，使其和草坪部分保持一致。

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