Note with Portable Version Extract and run BabylonPortable. Don't forget to close Babylon before leaving Windows : right-click on icon, Exit. Not Thinstalled, so you can translate a word with choosed click of the mouse. Interface language set by launcher with localization of Windows (English, Arabic, SimpChinese, TradChinese, Dutch, French, German, Hebrew, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Swedish, Turkish). To set language yourself, write SystemLang=false in BabylonPortable.ini.
To add dictionaries: Download Offline Dictionary (SFX Zip exe). http://www.babylon.com/category/1/Languages.html Extract .BGL file with 7-Zip, WinRAR or WinZip (right-click on exe). Drag'n'drop .BGL file on BabylonPortable.exe (not running).