boracite

例句：

1. 1. Boracite is a mineral that can be used as a fire retardant in building materials.
   硼砂石是一种可用于建筑材料中的阻燃剂。
2. 2.The boron content in boracite is high enough to make it useful for industrial applications.
   硼砂石中的硼含量足够高，使其在工业应用中非常有用。
3. 3.Boracite is also known for its ability to absorb moisture and improve the durability of certain materials.
   硼砂石还因其吸水能力而闻名，能提高某些材料的耐用性。