osmiridium

例句：

1. 1. The osmiridium is a rare mineral that has been found in the area.
   这个osmiridium是一种稀有的矿物，曾在该地区被发现。
2. 2. The osmiridium was used as a currency in ancient times.
   osmiridium在古代被用作货币。
3. 3. The osmiridium was discovered during a scientific expedition to the Antarctic.
   osmiridium是在一次前往南极的科学考察中被发现的。