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单词 realgar
释义 realgar/riˈælɡə/n. a mineral of arsenic sulphide used as a pigment and in fireworks Also called 亦称作 red arsenic 雄黄,二硫化二砷,鸡冠石[Middle English via medieval Latin from Arabic rahj al-ɡ̇ɑˉr ‘dust of the cave’]
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