现在需要给圆角矩形图层加入投影、内阴影和描边的图层样式(双击图层面板上面的图层，打开图层样式对话框)。

Now Add a Drop Shadow, Inner Shadow, and Stroke layer styles to your rounded rectangle layer (double-click on the layer in the Layers Panel to open up the layer style dialog box).

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也就是说在场景环境中，渲染面板的阴影按钮和渲染按钮必须按下！

This means that the Shadow Button of the Render Panel in the Scene Context and Render Buttons must be on!

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