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单词 volcanic glass
释义

WordReference Random House Unabridged Dictionary of American English © 2024
volcanic glass, 
  1. Geologya natural glass produced when molten lava cools very rapidly;
    obsidian.
  • 1830–40

Collins Concise English Dictionary © HarperCollins Publishers::
volcanic glass n
  1. any of several glassy volcanic igneous rocks, such as obsidian and pitchstone
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更新时间:2024/9/21 13:42:09