Blogger has announced about their latest update for the translation pack which adds about nine languages.
Amharic, Arabic, Bengali, Greek, Persian, Gujarati, Kannada, Hindi, Malayalam, Marathi, Nepali, Punjabi, Russian, Sanskrit, Serbian, Tamil, Telugu, Tigrinya, and Urdu.
So how do you enable it the translation on blogger?.. Well pretty simple actually.
1. Settings (3rd from the left upper corner on your blogger post editor window)
2. The look at the bottom and you'll see "Enable Translation?"
3. From the drop down menu choose your default language and click "Save Settings".
Source : this blogger buzz updated translation page.