简介：David Attenborough follows the remarkable story of the discovery of fossils in the Patagonia region o[ZiYuantun.Com]f Argentina which prove to belong to the largest animal to ever walk the Earth. 译文(2): 大卫·艾登堡在阿根廷的巴塔哥尼亚地区发现了化石，这些化石被证明属于地球上有史以来最大的动物。