precious metal

例句：

1. 1. The ancient civilizations relied heavily on gold and silver as precious metals.
   古代文明严重依赖黄金和白银作为珍贵金属。
2. 2. These rare metals are highly sought after for their unique properties.
   这些稀有金属因其独特性质而受到高度追捧。
3. 3. The discovery of new precious metal deposits has sparked renewed interest in the mining industry.
   新发现的珍贵金属矿床重新点燃了矿业的激情。