简介火山玻璃（Volcanic glass）：指由火山喷发出来的熔岩，迅速冷却来不及结晶而形成的一种玻璃质结构岩石。
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Acid volcanic glass 火山玻璃岩 ; 酸性火山玻璃岩
volcanic glass beads 火山玻璃珠
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以上来源于: WordNet
N any of several glassy volcanic igneous rocks, such as obsidian and pitchstone 火山玻璃
natural glass
Piece of black, volcanic glass.
一块黑色的火山玻璃。
youdao
Volcanic rock includes the volcanic glass obsidian.
火山岩包括黑曜岩火山玻璃。
But in 2008, an analysis of a handful of lunar volcanic glass beads suggested they might have formed in a watery environment.
但是，在2008年，对少量月球火山玻璃碎屑的分析显示它们可能是在含水的环境中形成的。
Ultra-sharp scalpels used in delicate procedures like eye surgery are still crafted by hand from volcanic glass called obsidian.
FORBES: No. 1 The Knife
Instead, out comes a synthetic gaseous fuel and a lump of shiny rock, not unlike volcanic glass, with toxins locked up inside in relative safety.
WSJ: Grappling With a Garbage Glut
Volcanic glass transformed into a mineral called chlorite.
BBC: NEWS | Science/Nature | Early life thrived in lava flows
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