一般道路空间
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general space of path
一般路径空间
以上为机器翻译结果，长、整句建议使用 人工翻译 。
This exploits one of the predictions of Einstein's general theory of relativity: that the path of a beam of light (which is a straight line in empty space) is bent inwards by the gravity of a massive object.
ECONOMIST: Cosmology: I spy with my little gravitational lens | The
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