silithiane

例句：

1. 1. The stone is made from silica sand and has a hardness of7 on the Mohs scale.
   这种石头是由硅砂制成的，莫氏硬度为7。
2. 2. The silicate rockcontains trace amounts of iron and manganese.
   这种硅酸盐岩石含有微量的铁和锰。
3. 3. The silicate rockis used in construction for its strength anddurability.
   这种硅酸盐岩石因其强度和耐用性而被用于建筑施工。