Light bouncing around a disordered crystal spontaneously arranged itself in bright spots, represented by the tall spikes./Luca Sapienza.

Soren Stobbe 2）光在无序晶体中弹跳会自发地形成亮斑，图中由尖峰表示。

youdao

This is because glass has the hardness of crystal materials while also having a disordered arrangement of molecules like a liquid.

VOA: special.2009.09.16

Crystal is an ordered solid, as opposed to a disordered solid.

晶体是一种有序的固体，和无序固体相反。

麻省理工公开课 - 固态化学导论课程节选