After that, position the bridge behind the angel and the city like the image below. Group the two layers and create a mask to hide in the image edges.

之后，将大桥摆在天使和城市身后，如下图所示。将大桥和城市两层打组，并创建蒙版将图片的边缘隐去。

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Hide the edges smoothly using a gradient mask. Pick the gradient Tool, create the below gradient in the Options Panel.

使用渐变遮罩使边缘平稳地消失。选择渐变工具，在选项面板中创建下面的渐变。

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It renders real edges which you can hide with an edge selection, as well as artificial edges and points, including SPD edges.

它使得真正的边缘，你可以边选择隐藏，以及人为的边缘和点，包括SPD边缘。

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Sawgrass gets its name from its sharp edges and can grow tall enough to hide predators and any sign of civilization.

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