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来源:雅诚德英语网
Unfortunately we have no clue where an alien civilization might be located, and what distances its transmissions must cover before being received on Earth.
但是不幸的是我们对于外星文明到底住在什么地方毫无概念,当然也不知道他们的信号到达我们这里要走过多少距离。
Unfortunately we have no clue where an alien civilization might be located, and what distances its transmissions must cover before being received on Earth.
但是不幸的是我们对于外星文明到底住在什么地方毫无概念,当然也不知道他们的信号到达我们这里要走过多少距离。