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计算机图形学中的挑战在于用数学模型的简单性来模拟现实世界的复杂性。
The world has nothing to fear from military ambition in our Government.
Success is not final, failure is not fatal: It is the courage to continue that counts.
The world is full of people who will tell you what you can't do. You don't need them. You already know what you can't do. What you need is someone to tell you what you can.
"A wordless book speaks in a universal language."