imagine a snowflake in your hand, and you look at it, and it's an incredibly complicated, beautiful object. But as you heat it up, it'll melt into a pool of water, and you would be able to see that, actually, it was just made of H20, water.
想象你手里有一片雪花 当你观察它，会发现它是如此精致 如此美丽的事物。但当你散发出热量 它就会融化成一小滩水 这时你就能看到其实它不过是 H2O，水形成的