“一经”指一场经历,“一验”即一次体验。总结体验变经验,大家献策保平安。一天,北京市马先生开着新买的桑塔纳小客车去会朋友,在北三环路准备上辅路变更道路时,与一辆出租车刮蹭。马先生好生奇怪:变道前明明看反光镜里没有车,怎么突然冒出一辆来呢?这就是人们常说的反光镜后? “Once” refers to an experience, “a test” is an experience. Experience experience change summary, we offer policy security. One day, Mr. Ma of Beijing opened a new Santana minivan to meet friends and prepared to climb the road with a taxi when he was preparing to change roads on the North Third Ring Road. Mr. Ma strange strange: Obviously change before the road look no mirror in the car, how suddenly come to a? This is what people often say after the mirror?