“鸟往高处飞,水往低处流”。这是自然之道,似乎谁都不会更改这亘古不变的道理。我却不然,我认为大千世界中虽然有很多事实可以印证这个道理,却仍有一些特殊现象是无法用这句话来解释的。在液态水中,水分子无时无刻不在运动,不过这样的运动是肉眼看不到的。在阳光猛烈地烘烤下,水分子的运动会变得很快,而在运动中就不断会有一部分分子逃离,成为气体,而这些气体就是水蒸气了。水蒸气随风升空。由于海拔越高,气温越低,水蒸气遇到高空中的冷空气,便冷凝成了水,这就成了“水往天上流”了。我觉得,人生如水。在人的一生中,不可能事事都称心如意,总会要遇到各种各样的困难和挫折。如果把世界比喻成大 “The bird flies high, the water flows low”. This is the way of nature, no one seems to change this timeless truth. However, I do not think so. I think there are many special facts that can not be explained by the fact that there are many facts in the world that can confirm this truth. In liquid water, water molecules are constantly moving, but such movements are not visible to the naked eye. Under intense sunburn, the movement of water molecules will become very fast, while in the movement part of the molecules will continue to escape, become gas, and these gases are water vapor. Water vapor winds up. Since the higher the altitude, the lower the temperature, the water vapor encounters the cold air in the sky and condenses into water, which becomes “water to the sky”. I think life is like water. In the course of one’s life, it is impossible to be satisfied with everything and always encounter various difficulties and setbacks. If the world metaphor large