deb http://archive.ubuntu.org.cn/ubuntu breezy-security main restricted universe multiversedeb http://archive.ubuntu.org.cn/ubuntu breezy-updates main restricted universe multiversedeb http://archive.ubuntu.org.cn/ubuntu/ breezy main universe multiverse restricteddeb http://archive.ubuntu.org.cn/backports/ breezy-extras main universe multiverse restricteddeb http://archive.ubuntu.org.cn/ubuntu-cn/ breezy main multiverse restricted universe