You can use GPolylines to plot the individual legs of a trip on a map.
您可以使用GPolyline在地图上描绘一个旅途中的各段行程。
Let's map out what to do on our trip.
我们来画地图，看看这次旅行要去做些什么！
Better read a map before your trip.
出发前最好先研究下地图。
This map might be of some use to you on your trip.
这张地图或许对你的旅行有些用处。
If you want to go on a trip, it's necessary to take a map with you.
如果你想旅游，随身携带一张地图很有必要。
We first need to map out our trip.
我们必须先把旅程图标出来。
We first need to map out our trip.
我们必须先把旅程图标出来。
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