轨道供电，是铁路电气化的方法之一，颇常用于大众运输系统。
... The Third Rail 第三通道 third rail conductor 第三轨导电器 Third rail electric system 轨道供电 ...
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当汽车进入高速公路系统时，一只可伸缩的手臂将从汽车上落下，与轨道接触，这类似于为地铁列车供电的轨道。
When the auto enters the highway system, a retractable arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically.
一旦连接到轨道上，汽车将由系统提供电力，由中央计算机控制。
Once attached to the rail, the car will become electrically powered from the system, and control of the vehicle will pass to a central computer.
琴：我现在看到他们在轨道上运行，并由架空电力线路供电。
Jean: I I see now that they ride on tracks and are powered by overhead electric lines.
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