PS: In this way, you can install <code>ia32-libs</code>. However, we add the source of 13.04 instead, so, there may be some problem unknown。After install <code>ia32-libs</code>, I recommend you to remove the <code>ia32-libs-raring.list</code> in <code>/etc/apt/sources.list.d</code>, and do <code>sudo apt-get update</code>.
![sudo apt-get update 出錯 Updating from such a repository can‘t be done securely, and is therefore[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)