但是，旅客往往希望查看其他路线，以便比较成本、时间、沿途地点、交通工具等等。

However, a traveler often wants to look for other routes and compare cost, time, itinerary, carriers, and so on.

youdao

每个点代表国家铁路线上的一列火车；用户们可以通过筛选来查看地图上某一个站点的所有火车。

Each dot represents a train on the national network; visitors can filter the map to see all the trains bound for a particular station.

youdao

最后一个代码块再次使用这个序列，生成用户已经访问过的场面的 “路线”，从而查看用户在过去任何时间点所处的路线。

The final block of code again makes use of this sequence and generates an "itinerary" of which scenes the person had already visited to get to where they are at any given time.

youdao