<prompt> Translate the following text to EnglishMabadiliko ya viwango vya kitaifa vya ubora wa hewa NAQS vinavyolenga kupunguza ukungu yanaweza kuhitaji vyanzo vya huduma za umeme kupitisha hatua za ziada za udhibiti.  <response>: The revisions of the National Ambient Air Quality Standards NAAQS aimed at reducing haze may require electric utility sources to adopt additional control measures. 