tourmaline
n. [矿物] 电气石
例句
The stunning gemstones include faceted Hessonite Garnet, Sugilite and Pink Tourmaline cubes.
这些令人惊叹的宝石包括在上雕琢平面的钙铝榴石石榴石、紫水晶和粉色碧玺方块。
A polished tourmaline from India gleams.
这是一颗来自印度的经打磨后光洁的电气石。
What do the underlined words "cordierite, calcite or tourmaline" mean?
下划线的“堇青石、方解石或电气石”是什么?