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创建或修改 /etc/apt/sources.list.d/debian.sources
Types: deb
#URIs: https://deb.debian.org/debian 官方源注释了
URIs: http://mirrors.ustc.edu.cn/debian
Suites: trixie trixie-updates
#Components: main non-free-firmware
Components: main contrib non-free non-free-firmware
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg
Types: deb
URIs: https://security.debian.org/debian-security
Suites: trixie-security
Components: main non-free-firmware
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg