因爲測試需要，裝完Debian7 後，更新爲163的源，但是後來裝軟件時，一些軟件依賴包還是裝不上。後來把163源稍加改動，就好用了。163源內容如下：
deb http://mirrors.163.com/debian wheezy main non-free contrib
deb http://mirrors.163.com/debian wheezy-proposed-updates main contrib non-free
deb-src http://mirrors.163.com/debian wheezy main non-free contrib
deb-src http://mirrors.163.com/debian wheezy-proposed-updates main contrib non-free
deb http://mirrors.163.com/debian-security wheezy/updates main contrib non-free
deb-src http://mirrors.163.com/debian-security wheezy/updates main contrib non-free
#註釋掉下面的三行，刪除也行
#deb http://http.us.debian.org/debian wheezy main contrib non-free
#deb http://non-us.debian.org/debian-non-US wheezy/non-US main contrib non-free
#deb http://security.debian.org wheezy/updates main contrib non-free