(适用于台湾,香港,大陆西南电信线路)
deb ftp://ftp.tw.debian.org/debian/ testing main #contrib non-free
deb-src ftp://ftp.tw.debian.org/debian/ testing main #contrib non-free
deb http://security.debian.org/ testing/updates main

直接 vim /etc/apt/sources.list,复制上去就OK!