alum rock

例句：

1. 1. The mine produces high-quality aluminium ore.
   这个矿生产高质量的铝土矿。
2. 2.Aluminium is widely used in the production of electronics and other materials.
   铝在电子产品和其他材料的生产中广泛应用。
3. 3.The aluminium industry has been expanding rapidly in recent years.
   近年来，铝工业迅速扩张。