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20 小时
All Thats Interesting on MSNResearchers Discover Ancient Egyptian Ramp That May Explain How The Great Pyramids ... - MSNWikimedia CommonsThe Great Pyramids at Giza. Archeologists have discovered a 4,500-year-old ramp in Egypt that might have ...
22 小时
ZME Science on MSNScientists find ancient 250-million-year-old seafloor from the time of dinosaurs ... - MSNUniversity of Maryland scientists have found remnants of an ancient seafloor buried deep within Earth’s mantle, offering a ...
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