您需要将以下内容添加到隐藏项元数组中：

add_filter(\'woocommerce_hidden_order_itemmeta\', 
   array($this, \'hidden_order_itemmeta\'), 50);

function hidden_order_itemmeta($args) {
  $args[] = \'my_hidden_meta\';
  return $args;
}

My solution:

//remove order item meta key
        add_filter( \'woocommerce_order_item_get_formatted_meta_data\', \'mobilefolk_order_item_get_formatted_meta_data\', 10, 1 );

function mobilefolk_order_item_get_formatted_meta_data($formatted_meta){
        $temp_metas = [];
        foreach($formatted_meta as $key => $meta) {
            if ( isset( $meta->key ) && ! in_array( $meta->key, [
                    \'lyric_id\',
                    \'lyric_song_title\',
                    \'lyric_artist_name\'
                ] ) ) {
                $temp_metas[ $key ] = $meta;
            }
        }
        return $temp_metas;
    }