铱

例句：

1. 1. The precious metal is used in jewelryand electronics.
   这种珍贵金属用于珠宝和电子产品。
2. 2. Iridium is a rareelement that has been found in meteorites.
   铱是一种稀有元素，已在陨石中发现。
3. 3. The atomic clock uses iridium atoms to measure time accurately.
   原子钟使用铱原子来精确测量时间。