See sources.list(5) for more information, especialy
# Remember that you can only use http, ftp or file URIs
# CDROMs are managed throught the apt-cdrom tool.
# もし Debian パッケージの description (説明文) を日本語で読みたいならば
# 次の 2 行の先頭の # を外し、さらにその次の 1 行を # でコメントアウトしてください。
#deb ftp://ftp.jp.debian.org/debian-ddtp ja/stable main
#deb ftp://ftp.jp.debian.org/debian stable contrib non-free
deb ftp://ftp.jp.debian.org/debian stable main contrib non-free
deb ftp://ftp.jp.debian.org/debian-non-US stable/non-US main
contrib non-free
deb ftp://ftp.jp.debian.org/debian-jp stable-jp main contrib
non-free
deb ftp://ftp.jp.debian.org/debian proposed-updates main contrib
non-free
#deb ftp://ftp.jp.debian.org/debian-jp proposed-updates-jp main
contrib non-free
deb http://security.debian.org/ stable/updates main contrib
non-free
# Uncomment if you want the apt-get source function to work
#deb-src ftp://ftp.jp.debian.org/debian stable main contrib
non-free
#deb-src ftp://ftp.jp.debian.org/debian-non-US stable/non-US
main contrib non-free
#deb-src ftp://ftp.jp.debian.org/debian-jp stable-jp main contrib
non-free