夏、秋的早晨,常可在一些草叶上看到一颗颗亮晶晶的小水珠,这就是露水。许多人以为露水和雨水一样,是从天上掉下来的,其实不是,露水是在地面上形成的。在晴朗无云、微风飘拂的晚上,由于地面的花草、石头等物体散热比空气快,温度比空气低。当较热的空气碰到地面这些温度较低的物体时,便会凝结成小水珠滞留在这些物体上面,这就是我们看到的露水。如果夜间有微风,那么 Summer, autumn morning, often in some grass leaves to see a shining little drops of water, this is dew. Many people think that dew and rain are falling from the sky. Actually, dew is not formed on the ground. In a clear cloudless, breeze blowing night, due to ground flowers, stones and other objects heat faster than air, the temperature is lower than the air. When the hotter air hits the lower temperature objects on the ground, it condenses into small water droplets and stays on these objects, which is the dew we see. If there is a breeze at night, then