How I can change "Read more" text

Hi,
When I click to Portfolio widget item, I see post in blog with "read more" text. How can I change it to my language?
Creativity, WP.
http://gornyack.com/category/our_works/
The usual way to change <?php the_content> in index.php doesn't work.
Thanks in advance.

To do it right way, you need to translate po/mo files. Here is a description:
https://www.gavick.com/forums/wordpress ... 22095.html