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在寒冷的冬季,每逢雨雪天气,路面便会出现冰冻现象,影响交通安全。这时,护路工人将盐和砂砾的混合物铺洒在路面上,用来防止车辆在结冰的路
During the cold winter, the road surface will freeze and rain will affect traffic safety. At this point, road workers spread the mixture of salt and gravel on the road to prevent the vehicle from freezing