这样的设计自然有它的原因：当观众知道这座城市完全不受重力等物理定律约束的时候，梦境世界立刻变得令人心神不宁。
But there’s a reason for that: it’s unsettling to see the world as we know it completely untethered by rules like gravity.
精美的艺术品不像实用艺术品那样受物理定律的约束。
Fine-art objects are not constrained by the laws of physics in the same way that applied-art objects are.
当然，并非所有的编程问题都是关于约束的-或者说至少这并非总是自然定律。
Of course, not all programming problems are about constraints — or at least that is not always a natural formulation.
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