alkide

例句：

1. 1.The alkaline earth metals are important in the production of fertilizers.
   碱土金属在生产肥料中非常重要。
2. 2.The alkaline earth metals have a strong affinity for water.
   碱土金属对水有很强的亲和力。
3. 3. The alkaline earth metals are used to make soap and detergents.
   碱土金属用于制造肥皂和洗涤剂。