Crystal
01
a solid substance formed when a chemical compound solidifies, with atoms arranged in a highly regular, repeating pattern
例子
Salt forms a cubic crystal when it solidifies.
The chemist examined the crystal under a microscope.
02
a rock or mineral formed by the solidification of a substance, with regularly repeating internal structure and often distinct external faces
例子
The geologist collected several quartz crystals from the cave.
The geologist found a crystal embedded in the rock.
03
a crystalline component used in electronic devices to control or stabilize electrical signals
例子
Circuit boards contain crystal oscillators for stable frequencies.
Engineers tested the crystal's performance in the sensor.
04
a transparent protective cover that shields the face of a watch
例子
The watch crystal was scratched after falling on the pavement.
A cracked crystal was replaced to restore the watch's appearance.
05
glassware made from quartz or containing quartz components, valued for clarity, brilliance, and decorative or functional use
例子
The dining table was set with crystal glasses.
She admired the crystal vase on the mantelpiece.
06
colorless, high-purity glass, typically made from nearly pure silica, used as a raw material for decorative, functional, or industrial purposes
例子
The laboratory used a container made of clear crystal.
Lighting fixtures sometimes incorporate crystal for refracting light.
07
冰毒, 甲基苯丙胺晶体
methamphetamine, especially in crystalline form, often smoked or ingested
Slang例子
He was caught with crystal in his backpack.
他被抓到背包里有水晶。
Some users smoke crystal for a long-lasting high.
一些用户吸食冰毒以获得持久的快感。
