Translate "project" and "project category" slug in Divi theme in WordPress

Question

I managed to modify the standard "project_category" slug into "localita" and the standard "project" slug into "vendita". This is for the Italian side of the website. Now I am translating it into English, and I am trying to get those slug translated as well as follow:

• localita -> place
• vendita -> sale
• vendite -> sales

The php code used so far is the following:

add_filter('register_taxonomy_args', 
    'change_taxonomy_category_project', 10, 2);

function change_taxonomy_category_project($args, $taxonomy)
{
    if ('project_category' === $taxonomy) {
        $args['rewrite']['slug'] = 'localita';
    }
    return $args;
}

function change_taxonomy_project()
{
    register_post_type('project',
        array(
            'labels' => array(
                'name' => __('Vendite', 'divi'),
                'singular_name' => __('Vendita', 'divi'),
            ),
            'has_archive' => true,
            'hierarchical' => true,
            'public' => true,
            'rewrite' => array('slug' => 'vendita', 'with_front' => false),
            'supports' => array(),
        ));
}

add_action('init', 'change_taxonomy_project');

How can I get those strings translated by editing that code? I am using WPML to translate all the contents and currently using WordPress with Divi theme from Elegant Themes.