试图找出最好的方法来做到这一点。希望我能得到一些帮助。因此，我正在开发一个插件，用于处理定制的post类型的汽车。我想补充一下。与CPT ie模型和Make相关的几个类别分类法。我已经成功地添加了模型分类法，如下所示：

   //model taxonomy options
        $model_labels = array(
          \'name\' => _x( \'Models\', \'taxonomy general name\' ),
          \'singular_name\' => _x( \'Model\', \'taxonomy singular name\' ),
          \'search_items\' =>  __( \'Search Models\' ),
          \'all_items\' => __( \'All Models\' ),
          \'parent_item\' => __( \'Parent Model\' ),
          \'parent_item_colon\' => __( \'Parent Model:\' ),
          \'edit_item\' => __( \'Edit Model\' ), 
          \'update_item\' => __( \'Update Model\' ),
          \'add_new_item\' => __( \'Add New Model\' ),
          \'new_item_name\' => __( \'New Model Name\' ),
          \'menu_name\' => __( \'Models\' ),
          \'back_to_items\' => __( \'? Back to models\' ),
        );    

      // Now register the taxonomy

        register_taxonomy(\'models\',\'car\', array(
          \'hierarchical\' => true,
          \'labels\' => $model_labels,
          \'show_ui\' => true,
          \'show_admin_column\' => true,
          \'query_var\' => true,
          \'rewrite\' => array( \'slug\' => \'model\' ),
        ));

现在的问题是，我如何注册一个单独的“make”分类法作为“model”分类法的父分类法？WordPress可以吗？Ie是否有“类别>子类别>帖子”设置？希望这是有意义的。