雪为什么是白色的？

Snow looks soft and white. 雪花看起来，白白的、软软的。 But each snowflake is made of ice. 可每一片雪花，都是冰做的。 Ice itself is clear, like glass. 冰本身是透明的，像玻璃一样。 Snow has many small faces and cracks. 雪片里有好多小棱角和缝。 Light bounces off all these faces. 阳光在这些小面上弹来弹去。 All the colors mix back to white. 各种颜色的光，又混成了白色。 That is why the snow looks so white. 所以整片雪地，看着雪白雪白。