# 

# deb cdrom:[Debian GNU/Linux 9.3.0 _Stretch_ - Official i386 DVD Binary-1 20171209-13:03]/ stretch contrib main

# deb cdrom:[Debian GNU/Linux 9.3.0 _Stretch_ - Official i386 DVD Binary-1 20171209-13:03]/ stretch contrib main

deb http://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main
deb-src http://mirrors.tuna.tsinghua.edu.cn/debian/ stretch main

deb http://security.debian.org/debian-security stretch/updates main contrib
deb-src http://security.debian.org/debian-security stretch/updates main contrib

# stretch-updates, previously known as 'volatile'
deb http://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main contrib
deb-src http://mirrors.tuna.tsinghua.edu.cn/debian/ stretch-updates main contrib