iceweasel (firefox) 瀏覽器重新安裝

我從 Kali Linux 中的“添加/刪除軟體”選項中解除安裝了我的瀏覽器（iceweasel）。在刪除時，它要求也解除安裝一個我不記得的依賴包。

但是現在當我按照其官方網站上給出的說明重新安裝它時，它給出了以下錯誤：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package iceweasel is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or is only    available  from another source
E: Package 'iceweasel' has no installation candidate

有什麼建議麼 ！！！

您可以將以下行添加到您的/etc/apt/sources.list

deb http://http.kali.org/ /kali main contrib non-free
deb http://http.kali.org/ /wheezy main contrib non-free
deb http://http.kali.org/kali kali-dev main contrib non-free
deb http://http.kali.org/kali kali-dev main/debian-installer
deb-src http://http.kali.org/kali kali-dev main contrib non-free
deb http://http.kali.org/kali kali main contrib non-free
deb http://http.kali.org/kali kali main/debian-installer
deb-src http://http.kali.org/kali kali main contrib non-free
deb http://security.kali.org/kali-security kali/updates main contrib non-free
deb-src http://security.kali.org/kali-security kali/updates main contrib non-free

然後執行

apt-get update
apt-get upgrade
apt-get install iceweasel

引用自：https://unix.stackexchange.com/questions/83202