如果要将术语描述添加为标题属性，并在悬停时显示，则可以“fork”get_the_term_list 函数添加到将添加title属性的版本，类似这样的操作应该可以：

function get_terms_with_desc( $id = 0 , $taxonomy = \'post_tag\', $before = \'\', $sep = \'\', $after = \'\' ){
    $terms = get_the_terms( $id, $taxonomy );
    if ( is_wp_error( $terms ) )
            return $terms;
    if ( empty( $terms ) )
            return false;
    foreach ( $terms as $term ) {
            $link = get_term_link( $term, $taxonomy );
            if ( is_wp_error( $link ) )
                    return $link;
            $term_links[] = \'<a href="\' . esc_url( $link ) . \'" rel="tag" title="\'.esc_attr( $term->description ).\'">\' . $term->name . \'</a>\';
    }
    $term_links = apply_filters( "term_links-$taxonomy", $term_links );
    return $before . join( $sep, $term_links ) . $after;
}