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Draw by clicking and dragging with your mouse. Change the paint color by using the color input on the bottom left. You can draw on either canvas and your changes will show up on the other, as if they were collaborating on the same picture.
，这一点在PDF资料中也有详细论述
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王天：底层技术栈是通用的，但场景、产品定义必须精准。
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