So we could either take something long and make it a topic, like with the railway and the Hurtigruten, or we could take a topic and make it long.
我们可以先拍一个特别长的节目，形成一个话题， 就像那个火车和油轮之旅那样； 也可以先定好一个话题，再拍成一个漫长的节目。