scarce metal

例句：

1. 1. The scarce metal is a valuable resource for the construction industry.
   这种稀缺金属是建筑业的宝贵资源。
2. 2. The scarce metal has been in high demand due to its unique properties.
   由于其独特的性质，这种稀缺金属一直需求量大。
3. 3.The scarce metal is often used in cutting tools and machinery.
   这种稀缺金属通常用于切割工具和机械中。