##中科大源
deb http://mirrors.ustc.edu.cn/debian jessie main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian jessie main contrib non-free
deb http://mirrors.ustc.edu.cn/debian jessie-proposed-updates main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian jessie-proposed-updates main contrib non-free
deb http://mirrors.ustc.edu.cn/debian jessie-updates main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian jessie-updates main contrib non-free