计算机将收到的GPS数据添加到地图上，使得车辆调度员能够跟踪逃车的每一步行动。

Computers superimpose the GPS data over a map that allows dispatchers to track the vehicle's every move.

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调度员也可依次进行合理安排车辆的发车时间及间隔时间，并对公交车驾驶员进行考核。

The controller can carry on the departure time and spacing interval of the arrangement vehicle rationally sequentially, and examine the bus driver.

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调度员解释说：“太多货车要上高速公路了，这些货车比其它车辆行驶地慢。”

"A lot of trucks get on the expressway there," the controller explained. "They can't speed up as fast as cars."

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