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可以调整剪切区域的不透明度吗？你真的可以说那些不在剪辑区域中的东西，以某种程度的不透明度显示它吗？
您可能需要查看不透明蒙版
http://silverlight.net/blogs/msnow/archive/2008/08/25/terrain-tutorial-part-3-creating-smooth-tile-transitions-using-opacity-masks.aspx
http://geekswithblogs.net/Silverlight2/archive/2008/10/22/working-with-opacity-masks.aspx