最好的选择是使用分类法。

如果EN、DE和FR是术语，那么您可以循环遍历它们，并以每个术语为基础获取页面。

您可以结合一个插件来实现这一点，该插件允许您手动重新排序此类术语。

https://wordpress.org/plugins/i-order-terms/

// Get all of the terms in the taxonomy
$countries = get_terms( \'countries\' );

// Check to ensure there are results returned
if ( !empty( $countries ) && !is_wp_error( $countries ) ) {

    // Loop through the countries
    foreach($countries as $country) {

        $args = array(
            \'post_status\' => \'publish\',
            \'post_type\' => \'page\',
            \'countries\' => $country->slug,
        )

        // Get all of the pages that have this term
        $country_pages = new WP_Query($args);

        // If there are results then print out the country\'s title and then a list of pages for that country.
        if($country_pages->have_posts()) : ?>

            <h2><?php echo $country->name; ?></h2>

            <ul>

                <?php 
                while($country_pages->have_posts()) : $country_pages->the_post(); ?>

                    <li><?php the_title() ?></li>

                <?php endwhile; 
                // Ensure that the main query is reset
                wp_reset_postdata(); ?>

            </ul>

        <?php 
        endif; 

    }
}