| 释义 |
tourmaline/ˈtʊəməlin, -i:n/n. a boron aluminium silicate mineral of various colours, possessing unusual electrical properties, and used in electrical and optical instruments and as a gemstone 电气石(呈各种不同颜色的硼铝硅酸盐矿物，具有非同寻常的电气性能，用于电气和光学仪器中，也可用作宝石) [French, from Sinhalese toramalli ‘porcelain’] |