名词
中文翻译：火成岩凝灰岩
同义词：
['igneous tuff', 'volcanic tuff']
例句：
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1. The ancient city is covered inlayers of lithic tuff,revealing its long history.
这个古城被层层的火成岩凝灰岩覆盖，显露出它悠久的历史。
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2. The geologists are studying the lithic tuff to understand how it formed.
地质学家正在研究火成岩凝灰岩以了解其形成过程。
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3. Thelithic tuffis a valuable resource for buildingmaterials.
火成岩凝灰岩是建筑材料的宝贵资源。