名词
中文翻译：双道信号灯
同义词：
['双车道信号灯例句：1. The two-course beacon at the intersection is a crucial part of the traffic system.（十字路口的双道信号灯是交通系统的重要组成部分。）']
例句：
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1. The two-course beacon at the intersection is a crucial part of the traffic system.
十字路口的双道信号灯是交通系统的重要组成部分。
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2.The driver followed the two-course beacon and safely arrived at his destination.
司机按照双道信号灯的指示，安全地到达了目的地。
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3. The two-course beacon helped to improve the efficiency of traffic flow in the city.
双道信号灯有助于提高城市交通流量的效率。