# 默认注释了源码仓库，如有需要可自行取消注释
deb [arch=arm64] http://mirrors.ustc.edu.cn/ubuntu-ports/ focal main restricted universe multiverse
# deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ focal main main restricted universe multiverse
deb [arch=arm64] http://mirrors.ustc.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse
# deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse
deb [arch=arm64] http://mirrors.ustc.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse
# deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse
deb [arch=arm64] http://mirrors.ustc.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse
# deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse
