Download the dictionary files and extract it to “ ~/.stardict/dic” or “/usr/share/stardict/dic” directory. For an example:
tar -xjvf a.tar.bz2
GoldenDict is a similar program to StarDict, and the same format of dictionary is supported. You just need to put the extracted directories of dictionary to the “~/.goldendict/dic” directory, and add this directory to the search path in GoldenDict.