4 篇文章
the basis of Lechuguilla's remarkable formations.
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the basis of Lechuguilla's remarkable formations. 它们最终形成了龙舌兰洞的奇景

It was Lechuguilla's gypsum crystals
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It was Lechuguilla's gypsum crystals 龙舌兰洞的石膏结晶群

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

Lechuguilla's rock had not been eaten away by running rainwater.
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Lechuguilla's rock had not been eaten away by running rainwater. 龙舌兰洞中的岩石并非被流水侵蚀

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