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Fine art is a technique of description, which is for something you have already know. ​美术是描述您已经知道的事物
Art is Help to get the answers you want. 艺术是帮助你得到你想要的答案
Design is Help to realize the effect you want. 设计是帮助你实现你想要的效果

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Crop circle: 
1. The circle represents the light part of the object (looks like the sun)
2. The size of the circle represents the light intensity on the surface of the object: 
3. Side view of the object: