"璧"是个多义词，它可以指璧（汉字信息）,璧（文物）。
璧山市交警姜飞说，照明系统在夜晚和雨雾天气非常有用。
Jiang Fei, a traffic officer in Bishan, said that the lighting system was very useful in the evenings and on rainy and foggy days.
在璧山中学门口一条繁忙的马路上，为了保证学生放学后过马路时的安全，设置了人行横道。
At a busy road in front of a gate of Bishan Middle School, the crosswalk is installed to keep the students safe when they cross the road after school.
几个月前，一条高科技斑马线在重庆璧山区首次投入使用，该斑马线配有闪光灯和音频警告。
A high-tech zebra crossing with flashing lights and audio warning was put into use for the first time in Bishan district, Chongqing a few months ago.
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