Though the broad outline of a scientific theory can be sketched intuitively, when a part of the physical universe is finally understood, its description often looks like a page in a mathematics text.

尽管科学理论的大致框架能被直观地勾勒出来，但当物质世界的一部分最终被理解时，它的描述看起来通常就像数学课本中的一页内容。

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Newton, rules of the physical universe.

牛顿，物质世界的规律。

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Cause cannot come after effect and that is absolutely fundamental to our construction of the physical universe.

因不能在果之后，这是我们构建物理世界的基础。

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That string theory may someday explain everything about the physical universe.

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There was something spectral about the sight of the old bridge at Mostar - as though the normal laws of the physical universe did not apply to it.

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The snake eating its own tail is the mythical symbol of the Ouroboros, which frequently has been interpreted as the Demiurge (an artisan-like figure responsible for fashioning and maintaining the physical universe) in its corrupted state as it attempts to consume its own creation.

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