据中国新闻网报道,一些史前古物证明在人类文明出现之前,可能存在过另外一个由智能生物统治的世界,他们的文明曾经高度发达却因种种人所不知的原因而最终灭绝。1、南非金属凹槽球十几年前,南非的矿工挖出一些神秘的金属球。其起源无从得知,这些球直径大小约为1英寸,其中的一些球的 According to the China News Network, some prehistoric antiquities prove that before the advent of human civilization there may have been another world ruled by intelligent creatures whose highly developed civilizations were eventually extinct for unknown reasons. 1, South African metal groove ball Ten years ago, South Africa’s miners dig some mysterious metal ball. Its origin is unknown, the diameter of these balls is about 1 inch, some of them