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1.The mine was filled with natroncalk, making it difficult to navigate.
矿井里充满了碱石，使得导航变得困难。
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2. The workers were trying to remove the natroncalk from the caves.
工人们试图从洞穴中清除碱石。
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3.The process of extracting natroncalk is environmentally harmful.
提取碱石的过程对环境有害。