the candy house英语作文，七年级下册人教版60页3a仿写
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when galaxies don't always leave each other directly, the model can start with a big bang. But they claim that this can only happen in a certain model of the exception, where galaxies are moving in the right way.. They argued; there seemed to be no big bang singularity Friedmann like models than the singularity of the model an infinite number of times,
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