alkali metals

例句：

1. 1.The alkaline metals are used in the production of batteries and other electrochemical devices.
   碱金属用于生产电池和其他电化学设备。
2. 2.The alkaline metals have a high reactivity and can react with water to form hydrogen gas.
   碱金属具有高反应性，可以与水反应生成氢气。
3. 3.The alkaline metals are also known for their ability to dissolve in water and create alkali solutions.
   碱金属也因其在水中的溶解性和产生碱溶液的能力而闻名。