deb http://mirrors.cloud.tencent.com/ubuntu trusty main restricted universe multiverse deb http://mirrors.cloud.tencent.com/ubuntu trusty-updates main restricted universe multiverse deb http://mirrors.cloud.tencent.com/ubuntu trusty-security main restricted universe multiverse #deb http://mirrors.cloud.tencent.com/ubuntu trusty-backports main restricted universe multiverse #deb http://mirrors.cloud.tencent.com/ubuntu trusty-proposed main restricted universe multiverse deb-src http://mirrors.cloud.tencent.com/ubuntu trusty main restricted universe multiverse deb-src http://mirrors.cloud.tencent.com/ubuntu trusty-updates main restricted universe multiverse deb-src http://mirrors.cloud.tencent.com/ubuntu trusty-security main restricted universe multiverse #deb-src http://mirrors.cloud.tencent.com/ubuntu trusty-backports main restricted universe multiverse #deb-src http://mirrors.cloud.tencent.com/ubuntu trusty-proposed main restricted universe multiverse