近日，一起交通事故在市区中心路段发生。据目击者称，当时一辆汽车突然疾驰而来，逆行撞上了一位行人。经过初步调查发现，该司机饮酒后驾车，在失控状态下与行人相遇。参考翻译：A recent traffic accident occurred in the city center. According to witnesses, a car suddenly drove at high speed and hit a pedestrian who was walking along the road in the opposite direction. Preliminary investigations have found that the driver had been drinking before driving, leading to a loss of control and causing the collision with the pedestrian.