天文常数和
Sum of astronomical constants
以上为机器翻译结果，长、整句建议使用 人工翻译 。
然而现有物理学理论还无法给出合理的解释，因此宇宙学常数问题成为物理学和天文学上最重大的疑难之一。
However, the small cosmological constant and cosmic coincidence problem cannot be resolved within the known laws of physics, which is the famous cosmological constant problem in physics and astronomy.
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