按Cmd -点击来加载新的渠道选择，记得选择合同，以避免任何剪辑从背景白色。
CMD-Click to load the selection of the new channel and remember to contract the selection to avoid clipping any white from the background.
图像看成是白色背景设置，最简单的方法是剪辑出来使用渠道。
Seeing as the images are set against a white background, the easiest way to clip them out is to use Channels.
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