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Is light-year a method to measure distances with time?
移花接木
2024-11-11 10:16:56
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最西边的岛上
2024-11-11 10:27:42
Yes, if go up in sapce ,2 infinite and beyond ;-))
最西边的岛上
2024-11-11 10:27:42Yes, if go up in sapce ,2 infinite and beyond ;-))