Ubuntu 12.04 precise source/源
# 目前不要用163和lupa的源，cn99的源也有问题，cn.ubuntu的源太慢了，可以用debian.ustc.edu.cn中科大的源，还算比较快
#中国科技大学
deb http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
# 如果你是浙大校内的，还可以使用
deb http://mirrors.zjustu.org/ubuntu/ precise main multiverse restricted universe
deb http://mirrors.zjustu.org/ubuntu/ precise-backports main multiverse restricted universe
deb http://mirrors.zjustu.org/ubuntu/ precise-security main multiverse restricted universe
deb http://mirrors.zjustu.org/ubuntu/? precise-updates main multiverse restricted universe
