matted crystal

例句：

1. 1. The crystals on the shelf have a matted appearance.
   架子上的晶体看起来有点毛糙。
2. 2.The matted crystals were once used as a decorative element in ancient architecture.
   这些毛糙的晶体曾经是古代建筑的一个装饰元素。
3. 3. The matted crystals are now being studied for their potential applications in medicine.
   这些毛糙的晶体现在正被研究，以探索它们在医学上的潜在应用。