12 篇文章
who knows how many Lechuguillas are still waiting to be discovered?
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who knows how many Lechuguillas are still waiting to be discovered? 谁知道还会有多少个龙舌兰洞 等着人们去发现呢

They discovered that Lechuguilla's limestone had actually been eaten away by sulphuric acid,
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They discovered that Lechuguilla's limestone had actually been eaten away by sulphuric acid, 他们发现龙舌兰洞的石灰岩 实际上是被硫酸侵蚀的