正如汤姆所说，你不应该使用query_posts 并且应该总是将任何参数作为数组传递。

我认为这将实现您的目标：

<?php

    // Arguments
    $args = array(\'
        \'nopaging\'          => true,
        \'terms\'             => \'featured\',
        \'posts_per_page\'    => 15,
        \'orderby\'           => \'rand\',
        \'order\'             => \'DESC\',
    \');

    // The query
    $the_query = new WP_Query( $args );

    // The loop
    if ( $the_query->have_posts() ) {
        while ( $the_query->have_posts() ) {
            $the_query->the_post();

            /*
                Output here, e.g.
                echo \'<h2>\' . get_the_title() . \'</h2>\';
                echo \'<div>\' . get_the_content() . \'</div>\';
            */

        }
    }

?>