n. 石英晶体；晶体（crystal的复数形式）

n a solid formed by the solidification of a chemical and having a highly regular atomic structure
n a crystalline element used as a component in various electronic devices
n a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces
n colorless glass made of almost pure silica
n glassware made of quartz
n a protective cover that protects the face of a watch

crystals的用法和样例：

例句

用作名词(n.)

Each mineral has crystals of a particular shape.每种矿物的晶体都有其特殊的形状。
The ammonia froze into bright crystals.是氨冻结后生成的明亮晶体。

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