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	drum majorette drummer drumming drum roll drumstick drunk drunk driver drunk-driving drunken drunkenly drunkenness drunk tank druthers Druze dry dryad dry battery dry-clean dry cleaners Dryden, John dry dock dryer dry-eyed dry farming dry goods

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