I did some searches on the forum to find ways to translate some words on my theme.
I used this to translate the "continue reading" button and works - https://forum.graphene-theme.com/graphene-support/how-can-i-translate-buttom-continue-reading-on-russian
Then I used this and it works to! - http://www.prasannasp.net/how-to-change-translate-a-string-in-graphene-theme/
What is the code for the "Submit comment" button?