添加自定义分类法时，可以声明重写段塞-

$labels = array(
    \'name\' => _x(\'Name\', \'taxonomy general name\'),
    \'singular_name\' => _x(\'Singular Name\', \'taxonomy singular name\'),
    \'search_items\' =>  __(\'Search Items\'),
    \'all_items\' => __(\'All Names\'),
    \'parent_item\' => __(\'Parent Item\'),
    \'parent_item_colon\' => __( \'Parent Ites:\'),
    \'edit_item\' => __(\'Edit Item\'), 
    \'update_item\' => __(\'Update Item\'),
    \'add_new_item\' => __(\'Add New Item\'),
    \'new_item_name\' => __(\'New Item Name\'),
);

register_taxonomy(
    \'ad_category\',
    array(\'post-type1\', \'post-type2\'),
    array(
        \'hierarchical\' => true,
        \'labels\' => $labels,
        \'show_ui\' => true,
        \'query_var\' => true,
        \'rewrite\' => array(\'slug\' =>\'new-york-city\')
    )
);