cat > /etc/apt/sources.list #debhttp://httpredir.debian.org/debian buster main contrib non-free #deb-srchttp://httpredir.debian.org/debian buster main contrib non-free
#debhttp://httpredir.debian.org/debian buster-updates main contrib non-free #deb-srchttp://httpredir.debian.org/debian buster-updates main contrib non-free
#debhttp://httpredir.debian.org/debian buster-backports main contrib non-free #deb-srchttp://httpredir.debian.org/debian buster-backports main contrib non-free
#debhttp://security.debian.org/ buster/updates main contrib non-free #deb-srchttp://security.debian.org/ buster/updates main contrib non-free
deb[arch=arm64]https://mirrors.tuna.tsinghua.edu.cn/debian buster main contrib non-free deb[arch=arm64]https://mirrors.tuna.tsinghua.edu.cn/debian buster-updates main contrib non-free deb[arch=arm64]https://mirrors.tuna.tsinghua.edu.cn/debian buster-backports main contrib non-free deb[arch=arm64]https://mirrors.tuna.tsinghua.edu.cn/debian-security/ buster/updates main contrib non-free