如何使用 "platinum" 造句
- 1. How much so is clear for platinum and palladium .
- 2. Platinum , iridium and the rest are expensive precisely because they are rare .
- 3. South africa is the world 's largest platinum producer and fifth-largest gold producer .
- 4. Platinum roared to the front in early july and maintained its lead ever since .
- 5. Miners arrested at the south africa platinum mine have been charged with murdering their colleagues .