使slug translatable 注册自定义帖子类型时：

register_post_type( 
    \'post_type_name\', 
    array (
        \'rewrite\' => array (
            \'slug\' => _x( \'post_type_name\', \'URL slug\', \'your_text_domain\' )
        )
    )
);

add_filter( \'gettext_with_context\', \'change_my_slug\', 10, 4 );

function change_my_slug( $translation, $text, $context, $domain )
{
    if ( \'URL slug\' !== $context or \'post_type_name\' !== $text or \'your_text_domain\' !== $domain )
        return $translation;

    return \'changed-slug\';
}