With TripIt Groups, fellow employees can track the travels of their colleagues on their company's travel map and sort out where they cross paths, for example.
通过TripIt Groups，企业员工可以利用其企业的差旅地图查看其他同事的差旅活动，找到他们是否有交叉的目的地。
To display an object track, draw a map for the time and date of the start of the track, and locate the object on the map.
要显示一个物体的轨迹，按照你要观察的轨迹起点日期新建一张星图，并在星图上选择这个天体。
This paper concentrates on how to track and extract the isogram cluster from the map image so that they can be vectorized and inputted into the spatial database rapidly and automatically.
研究地图中等值线群的快速输入问题，给出了自动跟踪提取等值线群的有效算法。
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