如果你安装了ubuntu 13.04，但是没有选择中文语言，你默认的源将会是us的。这样速度不太理想，如果你想使用国内源，请替换/etc/apt/source.list文件为下面的内容：
代码语言：javascript复制deb http://cn.archive.ubuntu.com/ubuntu/ raring main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ raring-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ raring-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ raring-proposed main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ raring-backports main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ raring main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ raring-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ raring-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ raring-proposed main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ raring-backports main restricted universe multiverse- Previous 给Mac OSX的Dock上加入最近打开的应用功能
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