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单词 tourmaline
释义

tourmaline

音标['tuməlin]

汉语翻译

【化】 电气石

英语解释:

名词 tourmaline:

  1. a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones
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