铈

例句：

1. 1. Cerium is a rare earth element with many applications in technology.
   铈是一种稀有的稀土元素，在技术领域有许多应用。
2. 2. Cerium oxide is used as a catalyst in the production of diesel fuel.
   铈氧化物用作柴油燃料生产的催化剂。
3. 3. The properties of cerium are similar to those of lanthanum, but it hasa higher melting point.
   铈的性质与镧相似，但其熔点更高。