七价原子

例句：

1. 1. Aluminium foil is commonly used for wrapping food in the kitchen.
   铝箔常用于厨房包裹食物。
2. 2. The aerospace industry heavily relies on aluminium alloys for their lightweight and strength properties.
   航空航天工业严重依赖铝合金，因其轻质和强度特性。
3. 3. Aluminium is a highly malleable metal that can be easily shaped into various forms.
   铝是一种极易塑形的金属，可以轻易地制成各种形状。