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单词	obsidian
释义	obsidianobsidian /əbˈsɪdiən/ noun [uncountable] Etymology ETYMOLOGYobsidian Origin: 1300-1400 Latin obsidianus lapis, mistake for obsianus lapis stone of Obsius, a Roman traveler said to have discovered the rock a type of dark rock which looks like glass
随便看	More, Sir Thomas Morgan, John Pierpoint morgue moribund Mormon Mormonism morn morning morning-after pill morning coat morning glory morning sickness morning star morning suit Moroccan Morocco morocco moron Moroni moronic moronically morose morosely moroseness morph

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