# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https://mirrors.bfsu.edu.cn/debian/ bullseye main contrib non-free
# deb-src https://mirrors.bfsu.edu.cn/debian/ bullseye main contrib non-free
deb https://mirrors.bfsu.edu.cn/debian/ bullseye-updates main contrib non-free
# deb-src https://mirrors.bfsu.edu.cn/debian/ bullseye-updates main contrib non-free

deb https://mirrors.bfsu.edu.cn/debian/ bullseye-backports main contrib non-free
# deb-src https://mirrors.bfsu.edu.cn/debian/ bullseye-backports main contrib non-free

deb https://mirrors.bfsu.edu.cn/debian-security bullseye-security main contrib non-free
# deb-src https://mirrors.bfsu.edu.cn/debian-security bullseye-security main contrib non-free