名词
中文翻译：交通信号灯
同义词：
['traffic light', 'traffic control signal', 'traffic sign']
例句：
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1. The traffic signalis red when it's about to turn.
交通信号灯即将变红时。
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2.The traffic signal is green for the left turn.
交通信号灯为左转亮绿色。
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3.The traffic signal is flashing because of the heavy rain.
由于大雨，交通信号灯闪烁。