I looked around and didn't see this information:
You can change the item's name to a different language.
/script DEFAULT_CHAT_FRAME:AddMessage("\124cffff8000\124Hitem:19019:0:0:0:0:0:0:0\124h[Trueno furioso, espada bendita del Hijo del Viento]\124h\124r");
I did this by going to the wowarmory and searching for items, then at the bottom of the page change the language to spanish/french/german (since I use the English version of Warcraft, I don't have the Korean and Japanese character sets). After you've changed the language, copy and paste the translated item name.
[2: Trade - City]: [Trueno furioso, espada bendita del Hijo del Viento] en mis pantalones