while you are crossing the road,the pedestrian light turns red.
问题描述：
while you are crossing the road,the pedestrian light turns red.
答
当你在过马路的时侯，交通（行人））灯变红了。。（意思是违规过马路）
答
当你在过马路的时侯，交通（行人））灯亮起红色。
答
当你通过这路时,行人灯转红了.