备份51CTO买到的视频课程

备份 saas.51cto.com 买到的视频课程

买到的课程快到期了，还没有看完， 这个时候可以备份下来课程以后再看。

步骤

1. 拖拽这个链接 备份课程到Chrome浏览器的工具栏。
2. 进入播放课程的页面
3. 点一下工具栏上的"备份课程"。
4. 完成。
   这是一个链接 菜鸟教程

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