gold，silver and platinum held in physical form

例句：

1. 1. The gold coin is worth a fortune.
   这枚金币价值连城。
2. 2. Gold is often used as a currency in many countries.
   黄金常被用作许多国家的货币。
3. 3. Gold has been used for centuries to make jewelry and other decorative items.
   黄金自古以来就被用来制作珠宝和其他装饰品。