First, they erect four wooden pillars painted with fernleaf veins.
首先，在平坦的场地上树起四根绘有蕨叶纹的木牌柱。
2
Look at a fernleaf, a cauliflower, and a magnified snowflake to see this distribution of sizes graphically.
看看蕨叶、菜花和放大的雪花，我们能从图形上看到尺寸的分布。
3
And builds some mathematics models. Using these models and methods, some nature scenes are simulated successfully, for example: terrain, tree, leaf and fern etc.