plural crystals
plural crystals
Learner's definition of CRYSTAL
1
[count] : a small piece of a substance that has many sides and is formed when the substance turns into a solid结晶;晶体 2
: a clear hard mineral that is either colorless or very light in color and that is used in making jewelry水晶 [noncount]
[count]
3 [noncount]
a : a special type of glass that is very clear水晶玻璃 —
often used before another noun常用于另一名词前 b : objects made of this glass水晶玻璃制品 4
[count] US : the clear glass or plastic cover on a watch or clock(钟表的)石英玻璃保护面,表蒙子