复制街灯，设置前景色为黑色，锁定图层的透明像素后填充黑色。

Duplicate the lamp, set your foreground color to black and fill the lamp copy locking transparent pixels.

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双击默认的背景图层，原本是锁定的和不能编辑的；

Double-click on the default Background layer, which will be locked and uneditable;

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双击默认的背景图层，原本是锁定的和不能编辑的；

Double-click on the default Background layer, which will be locked and uneditable;

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