主要是更新源的问题，我安装ibus-pinyin老是提示“无法定位软件包”
最后我用的是163的源：
# 163 源
deb http://mirrors.163.com/debian wheezy main non-free contrib
deb-src http://mirrors.163.com/debian wheezy main non-free contrib
deb http://mirrors.163.com/debian wheezy-proposed-updates main non-free contrib
deb-src http://mirrors.163.com/debian wheezy-proposed-updates main non-free contrib
deb-src http://mirrors.163.com/debian-security wheezy/updates main non-free contrib
deb http://mirrors.163.com/debian-security wheezy/updates main non-free contrib
再
apt-get update 一下
在安装ibus
apt-get install ibus-pinyin
重启，就可以了