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来源:雅诚德英语网
Until recently most astronomers believed that the space between the galaxies in our universe was a near-perfect vacuum.
直到最近,大多数天文学家都认为我们宇宙中星系之间的空间是近乎完美的真空。
Until recently most astronomers believed that the space between the galaxies in our universe was a near-perfect vacuum.
直到最近,大多数天文学家都认为我们宇宙中星系之间的空间是近乎完美的真空。