自带的 软件包源 不好用，卡顿严重，准备替换它：
方式一：deepin linux 如何更新或者更换软件源（注意：好像不起作用）
方式二：【推荐】利用 阿里云 提供的镜像快速更换本地的 yum 源 （CentOS/Ubuntu/Deepin 等系统都被支持），点击右边的“help”，会告诉你如何替换为“阿里云源”
方式三：替换为 “中国科学技术大学”源
sudo vim /etc/apt/sources.list
把其中的 “http://packages.deepin.com”替换为“http://mirrors.ustc.edu.cn”
最后，更新源
sudo apt-get update
个人电脑 /etc/apt/sources.list 文件的最终效果
“中国科学技术大学”源 和 阿里云源 混合用
deb http://mirrors.aliyun.com/ubuntu raring main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu raring-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu raring-updates main restricted universe multiverse # deb http://mirrors.aliyun.com/ubuntu raring-proposed main restricted universe multiverse # deb http://mirrors.aliyun.com/ubuntu raring-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu raring main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu raring-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu raring-updates main restricted universe multiverse # deb-src http://mirrors.aliyun.com/ubuntu raring-proposed main restricted universe multiverse # deb-src http://mirrors.aliyun.com/ubuntu raring-backports main restricted universe multiverse deb http://mirrors.aliyun.com/deepin raring main universe non-free deb-src http://mirrors.aliyun.com/deepin raring main universe non-free #deb http://mirrors.aliyun.com/deepin raring-updates main universe non-free #deb-src http://mirrors.aliyun.com/deepin raring-updates main universe non-free ## Generated by deepin-installer deb [by-hash=force] http://mirrors.ustc.edu.cn/deepin panda main contrib non-free #deb-src http://mirrors.ustc.edu.cn/deepin panda main contrib non-free