Configuring Multi-Language Support

All my application Lang I store in one file called application_lang.php.
$this->lang->load('application','english');. If you load more than one Lang then pass an array for 1st args. However only the custom Lang I translated did change, the other aren't

Ok man thank you but i know this way. I want to learn how can i load language files with
$this->lang->load('application','english');
setting of autoload.php config file.

I'm a person from Turkiye. I don't know English very well and i can't write what i want to say sometimes (as now happenes   ).

If i write something by mistake; please don't distress it and try to understand what i want to write.