Change the default language of gimp.

The system's default language is Chinese. So when I start Gimp from the menue, Gimp automatically use system default language as its default. But I want to change the default language for Gimp to English. This can be done by "Edit Menue". Click the "start" menue(the K menue), then right click to select "edit menue". Then choose gimp to edit. Here is the picture.
In the command item, add
LANG=en_US
and save the config. Now if you start gimp again, it will use english as the default language.