The first step is to duplicate the layer, you can name it whatever you want, but 'teeth' would be a good choice!

第一步是复制图层，图层命名可自定义，但“牙齿”倒是个不错的选择！

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You can't fully manipulate the bottom layer called 'Background', so select this layer, go up to the options at the top of the Layers palette and duplicate the layer.

你无法修改最底下那个叫做“背景”的图层。所以选择它，在图层面板上部的选项菜单中复制图层。

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Next, duplicate the layer just created and move the new layer to the top. This duplicated layer will be blurred again using the Gaussian blur Filter. However, use a higher radius such as 35 this time.

下一步，复制你刚才创建的图层并将它移至顶部，这个复制的图层将再次使用高斯模糊，然而，这次使用更大的半径，例如35。

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