Example entity field query including language.

EntityFieldQuery

    $query = new EntityFieldQuery();
    $query->entityCondition('entity_type', 'node')
                ->propertyCondition('type', 'blog')
                ->propertyCondition('status', 1)
                ->propertyOrderBy('created', 'DESC')
                ->fieldCondition('field_journal_carousel_image', 'fid', 0, '!=')
                ->range(0, 10);


$query->propertyCondition('language', array($GLOBALS['language']->language, LANGUAGE_NONE), 'IN');

    $result = $node_query->execute();