Thank you Алексей for your answer, As Currently, It's the only way to translate the site.
And Anthi this is the translation of the answer of Алексей.
"Hey. I translated the site into Russian. Download the Notepad ++ editor
Open the files at www / site / administrator / language / en-gb / sellacious. Ini and change the meaning of words between "quotes" save."
However, Anthi if you wait for our next Sellacious release, You'll be able to translate your site into 70+ languages very easily.