在研究了标记/术语函数之后，我成功地编写了一个函数来解决这个问题，并将其封装在一个函数中：

function tags_not_applied( ){
  // Get ID of post
  $post_id = get_the_ID();

  // Get post\'s current tags
  $tags_array = wp_get_post_terms( $post_id, \'taxonomy\', array("fields" => "ids") );
  if (empty($tags_array))
    return;

  // Put all tags into array
  $args = array(
    \'hide_empty\' => false,
    \'exclude\' => $tags_array
  );

  // Get all tags except the ones applied
  $terms = get_terms( \'taxonomy\', $args );

  if (empty($terms))
    return;

  // Create list of tags not applied
  $html = \'<ul class="tags_not_applied">\';
  foreach ( $terms as $term ) {
    $term_link = get_term_link( $term->term_id );

    $html .= "<li><a href=\'{$term_link}\' title=\'{$term->name} term\' class=\'patch patch-{$term->slug}\'>";
    $html .= "{$term->name}</a></li>";
  }
  $html .= \'</ul>\';
  echo $html;
}