换源

1. 打开终端。
2. 编辑 /etc/apt/sources.list 文件，可以使用命令行文本编辑器如 Nano 或 Vim。
3. 在文件中找到类似以下格式的行：
   deb http://deb.debian.org/debian/ buster main
4. 这是官方源的示例，将它替换为你所选择的其他源。
5. 保存更改并退出编辑器。
6. 运行以下命令更新软件包列表：sudo apt update

网易镜像站

  deb http://mirrors.163.com/debian/ stretch main non-free contrib
  deb http://mirrors.163.com/debian/ stretch-updates main non-free contrib
  deb http://mirrors.163.com/debian/ stretch-backports main non-free contrib
  deb-src http://mirrors.163.com/debian/ stretch main non-free contrib
  deb-src http://mirrors.163.com/debian/ stretch-updates main non-free contrib
  deb-src http://mirrors.163.com/debian/ stretch-backports main non-free contrib
  deb http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib
  deb-src http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib

中科大镜像站

  deb https://mirrors.ustc.edu.cn/debian/ stretch main contrib non-free
  deb-src https://mirrors.ustc.edu.cn/debian/ stretch main contrib non-free
  deb https://mirrors.ustc.edu.cn/debian/ stretch-updates main contrib non-free
  deb-src https://mirrors.ustc.edu.cn/debian/ stretch-updates main contrib non-free
  deb https://mirrors.ustc.edu.cn/debian/ stretch-backports main contrib non-free
  deb-src https://mirrors.ustc.edu.cn/debian/ stretch-backports main contrib non-free
  deb https://mirrors.ustc.edu.cn/debian-security/ stretch/updates main contrib non-free
  deb-src https://mirrors.ustc.edu.cn/debian-security/ stretch/updates main contrib non-free

阿里云镜像站

  deb http://mirrors.aliyun.com/debian/ stretch main non-free contrib
  deb-src http://mirrors.aliyun.com/debian/ stretch main non-free contrib
  deb http://mirrors.aliyun.com/debian-security stretch/updates main
  deb-src http://mirrors.aliyun.com/debian-security stretch/updates main
  deb http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib
  deb-src http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib
  deb http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib
  deb-src http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib

华为镜像站

  deb https://mirrors.huaweicloud.com/debian/ stretch main contrib non-free
  deb-src https://mirrors.huaweicloud.com/debian/ stretch main contrib non-free
  deb https://mirrors.huaweicloud.com/debian/ stretch-updates main contrib non-free
  deb-src https://mirrors.huaweicloud.com/debian/ stretch-updates main contrib non-free
  deb https://mirrors.huaweicloud.com/debian/ stretch-backports main contrib non-free
  deb-src https://mirrors.huaweicloud.com/debian/ stretch-backports main contrib non-free 

清华大学镜像站

  deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main contrib non-free
  deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main contrib non-free
  deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main contrib non-free
  deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main contrib non-free
  deb https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-backports main contrib non-free
  deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-backports main contrib non-free
  deb https://mirrors.tuna.tsinghua.edu.cn/debian-security/ stretch/updates main contrib non-free
  deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security/ stretch/updates main contrib non-free

兰州大学镜像站

  deb http://mirror.lzu.edu.cn/debian stable main contrib non-free
  deb-src http://mirror.lzu.edu.cn/debian stable main contrib non-free
  deb http://mirror.lzu.edu.cn/debian stable-updates main contrib non-free
  deb-src http://mirror.lzu.edu.cn/debian stable-updates main contrib non-free
  deb http://mirror.lzu.edu.cn/debian/ stretch-backports main contrib non-free
  deb-src http://mirror.lzu.edu.cn/debian/ stretch-backports main contrib non-free
  deb http://mirror.lzu.edu.cn/debian-security/ stretch/updates main contrib non-free
  deb-src http://mirror.lzu.edu.cn/debian-security/ stretch/updates main contrib non-free

上海交大镜像站

  deb https://mirror.sjtu.edu.cn/debian/ stretch main contrib non-free
  deb-src https://mirror.sjtu.edu.cn/debian/ stretch main contrib non-free
  deb https://mirror.sjtu.edu.cn/debian/ stretch-updates main contrib non-free
  deb-src https://mirror.sjtu.edu.cn/debian/ stretch-updates main contrib non-free
  deb https://mirror.sjtu.edu.cn/debian/ stretch-backports main contrib non-free
  deb-src https://mirror.sjtu.edu.cn/debian/ stretch-backports main contrib non-free
  deb https://mirror.sjtu.edu.cn/debian-security/ stretch/updates main contrib non-free
  deb-src https://mirror.sjtu.edu.cn/debian-security/ stretch/updates main contrib non-free

• 最后附上官方全球镜像站列表地址: Https://www.debian.org/mirror/list