知识点：椭圆选框工具、矩形选框工具、画笔、选区运算
视频网址：
https://mooc1-2.chaoxing.com/mooc-ans/mycourse/teacherstudy?chapterId=687030348&courseId=220576162&clazzid=85345057
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发布时间 2023-10-26 18:58:27作者: leelan
知识点：椭圆选框工具、矩形选框工具、画笔、选区运算
视频网址：
https://mooc1-2.chaoxing.com/mooc-ans/mycourse/teacherstudy?chapterId=687030348&courseId=220576162&clazzid=85345057