1.安装GoldenDict
使用yum安装需要EPEL源，故首先需要安装EPEL源。
Centos7
yum localinstall --nogpgcheck http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm //或rpm -vih http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-9.noarch.rpm
RHEL
来源：https://www.cnblogs.com/huang-chang/p/11758104.html