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Tunnels in Gemstone Might Be Sign of Life Life has found a way to survive in some of the most extreme conditions in existence. Now, scientists believe they might have found a new habitat for microscopic organisms inside a mineral substance called gar
发表于:2019-01-03 / 阅读(73) / 评论(0)
2018年VOA慢速英语(八)月
2018年VOA慢速英语(八)月