The traffic signal lamp provided by the invention ensures that people with achromatopsia can also identify the traffic signals.
本发明提供的交通信号灯，使得
症的人也能辨识交通信号。
The traffic signal lamp provided by the invention ensures that people with achromatopsia can also identify the traffic signals.
本发明提供的交通信号灯，使得症的人也能辨识交通信号。
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