名词
中文翻译：水晶石
同义词：
['crystal', 'silica crystal']
例句：
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1.The crystallites are arranged in a hexagonal pattern.
晶体以六边形的排列方式出现。
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2.The crystallites have a high refractive index and can be used as lenses.
晶体具有高折射率，可以用作透镜。
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3.The crystallites were found to have a unique optical property.
研究发现这些晶体具有独特的光学性质。