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词汇	obsidian
释义	obsidian   ob·sid·i·an /əbˈsɪdiən/ noun [uncountableU]   a type of rock that looks like black glass 黑曜岩 Examples from the Corpus obsidian• A plain black obsidian which the Minoan craftsmen tried may have come from the Siftlik area of Cappadocia.• A glass tide tinkled on the hull of the receiver, its echoing obsidian.• For example, many early human artifacts, such as arrowheads, are made of obsidian, a volcanic glass.• Unlike most volcanic rocks, obsidian does not contain phenocrysts; it is, so to speak, all glassy groundmass.• Walls, ceilings, floors were clad in smooth obsidian and jet carved with runes, sacred hexes and texts.• I had a friend send me some obsidian blades.• A glassy stone beloved by ancient toolmakers, obsidian was found only in two prehistoric spots in Arizona prior to the 1980s.• Pre-Columbian cultures in the New World did sophisticated operations, including skull surgery, with obsidian, he added. Origin obsidian (1300-1400) Latin obsidianus lapis, mistake for obsianus lapis “stone of Obsius”, a Roman traveler said to have discovered the rock
随便看	Employment-topic undermanned Employment-topic understaffed Employment-topic understaffed Employment-topic unemployable Employment-topic unemployable Employment-topic unemployed Employment-topic unemployed Employment-topic unemployment Employment-topic unemployment Employment-topic unemployment benefit Employment-topic unemployment benefit Employment-topic unskilled Employment-topic unskilled Employment-topic vacancy Employment-topic vacancy Employment-topic vacant Employment-topic vacant Employment-topic white-collar Employment-topic white-collar Employment-topic workday Employment-topic workday Employment-topic work experience Employment-topic work experience Employment-topic workforce Employment-topic workforce 围嘴儿 围嘴(儿) 围困 围场 围坐 围垦 围城 围城打援 围埝 围堰 围堵 围墙 围子 围屏 围岩 围巾 围廊 围截 围抢 围护 围抱 围拢 围捕 围攻 围栏

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