raw cast glass

例句：

1. 1. The artist uses a variety of raw materials to create his masterpiece.
   这位艺术家使用各种原材料来创作他的杰作。
2. 2.The raw material for this product is sourced from sustainable forests.
   该产品的原材料来自可持续森林。
3. 3. The raw cast glass was carefully polished to reveal its intricate patterns.
   原始玻璃被仔细抛光，以揭示其复杂的图案。