Also, in terms of ancient stone tools, they're gonna use things like obsidian, it's volcanic glass.
此外，就古代石器而言，他们会使用黑曜石，这是火山玻璃。
volcanic glass
英汉-汉英词典
n. 火山玻璃,松脂石
词组 | 习惯用语
您要查找的是不是：
Acid volcanic glass 火山玻璃岩；酸性火山玻璃岩
volcanic glass beads 火山玻璃珠
volcanic glass [地质] 火山玻璃（又称松脂石，火山熔岩急冷时形成的天然玻璃）；黑曜岩
英语例句库
- Perlite, obsidian and pitchstone are volcanic glass having the same compositions commonly with rhyolite as well as andesite and basalt.
珍珠岩、黑耀岩和松脂岩等玻璃质熔岩以酸性为主，中基性者也常见。
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原声例句
连线杂志
十万个为什么
Found in modern day Turkey, these primitive mirrors were made out of a polished volcanic glass called obsidian.
在现代的土耳其发现，这些原始的镜子是由一种叫做黑曜石的抛光火山玻璃制成的。
VOA Special 2017年11月合集
The villagers harvested wheat, raised animals and used simple tools made of bone and volcanic glass.
村民们收割小麦，饲养动物，并使用由骨头和火山玻璃制成的简单工具。
英语百科
Volcanic glass
Volcanic glass is the amorphous (uncrystallized) product of rapidly cooling magma. Like all types of glass, it is a state of matter intermediate between the close-packed, highly ordered array of a crystal and the highly disordered array of gas. Volcanic glass can refer to the interstitial, or matrix, material in an aphanitic (fine grained) volcanic rock or can refer to any of several types of vitreous igneous rocks. Most commonly, it refers to obsidian, a rhyolitic glass with high silica content.
近义、反义、联想词
近义词
n.volcanic rock
英英词典
volcanic glass n.
- a kind of natural glass produced when molten lava cools very rapidly
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