以下为句子列表：
英文: Physicists have a precedent for such a change: the law of gravity that Newton formulated in the 17th century, which had various conceptual and experimental limitations, gave way to Einstein's general theory of relativity in 1915.
中文: 牛顿在17世纪所写下的重力定律，在当时受到许多概念上及实验上的限制，到了1915年便由爱因斯坦的广义相对论所取代。
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英文: The idea offers a provocative way of thinking about quantum gravity, which would unify Einstein's general theory of relativity with quantum mechanics.
中文: 这样的想法，对于尝试统一爱因斯坦广义相对论与量子力学的量子重力学来说，无异提出了一个充满挑釁意味的思考方式。
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英文: When Einstein first applied his general theory of relativity to the universe, he made a dramatic simplifying assumption: the universe, on average, was homogeneous (it had no big lumps) and isotropic (it looked the same in all directions).
中文: 当爱因斯坦首度将广义相对论应用在宇宙学上时，他做了一项重大而精简的假设：宇宙在大範围是均匀（而不是一团一团的）且各向同性（各个方向看起来都一样）的。
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英文: Within a year of Einstein developing his general theory of relativity - and saying the equations were too hard to be solved - Karl Schwarzschild found the first solution describing what we now call a black hole.
中文: 在爱因斯坦提出广义相对论后的一年内－那些方程式还很难解开的时候－卡尔·施瓦西给出了第一个解，描述了现在人们所说的黑洞。
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