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The puzzle of the cosmic age is a long-standing key problem in big bang cosmology.
第一推动力是伴随着宇宙大爆炸的发生一并出现的,它在本质上是一种惯性力。
youdao
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The puzzle of the cosmic age is a long-standing key problem in big bang cosmology.
第一推动力是伴随着宇宙大爆炸的发生一并出现的,它在本质上是一种惯性力。
youdao