If two zones intersect when the polygons are superimposed, the lines they surround combine into one line.

如果二个区域相交当几何图形被叠加，线围拢组合入一条线。

youdao

If two zones intersect when the polygons are superimposed, the lines they surround combine into one line.

如果二个区域相交当几何图形被叠加，线围拢组合入一条线。

youdao