| 单词 | tourmaline | 
| 释义 | tour·ma·line    (trmə-lĭn, -lēn′)n.  A complex crystalline silicate containing aluminum, boron, and other elements, used in electronic instrumentation and, especially in its green, clear, and blue varieties, as a gemstone. [French, from Sinhalese toramalli, carnelian.]  | 
	
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