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天火字典

英英字典: closed_universe

closed universe   (TTS Sound)



Overview of noun closed_universe

The noun closed universe has 1 sense


  • closed universe -- ((cosmology) a universe that is spatially closed and in which there is sufficient matter to halt the expansion that began with the big bang; the visible matter is only 10 percent of the matter required for closure but there may be large amounts of dark matter)

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