雾是常见的一种天气现象。有人说:“雾是地面上的云,云是天上的雾。”这是有一定科学道理的。因为,云和雾都是由于空气中的水汽受冷后凝结形成的,只不过它们出现的位置不同——云在天空出现,雾却笼罩地面。雾与未来天气的变化有着密切的关系。因此,自古以来,我国劳动人 Fog is a common weather phenomenon. Someone said: “The fog is the cloud on the ground, and the cloud is the fog in the sky.” This is scientifically reasonable. Because clouds and fog are formed by the condensation of water vapour in the air, but they appear in different locations - clouds appear in the sky, and fog covers the ground. There is a close relationship between fog and future weather changes. Therefore, since ancient times, the working people in our country