n.

1. 水晶[U]
2. 水晶饰品[C]
3. 晶质玻璃[U]
4. 结晶体[C]
   Each mineral has crystals of a particular shape.

   每种矿物的晶体都有其特殊的形状。

5. 【美】表面玻璃[C]

a.

1. 水晶的，水晶制的
   He drank from a crystal wine glass.

   他用水晶酒杯喝酒。

2. 水晶般的，清澈的，透明的
   The house stood by a crystal stream.

   那所房子坐落在清澈的小溪旁边。

   He wants to make it crystal clear that he doesn't agree with us.

   他想清楚地表明他不同意我们的意见。

3. 晶体的，用晶体的
   The boy can make crystal sets.

   那个男孩会做晶体收音机。

n.

1. a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces.
   ▸Chemistry  any solid consisting of a symmetrical, ordered, three-dimensional aggregation of atoms or molecules.
   ▸a clear transparent mineral, especially quartz.
2. (also crystal glass) highly transparent glass with a high refractive index.
   ▸the glass over a watch face.
3. [as modifier] clear and transparent:
   the crystal waters of the lake.