钶

例句：

1. 1. The new car is made from the rare metal niobium.
   这款新车是由稀有金属铌制成的。
2. 2. The scientist discovered a new element in the laboratory.
   科学家在实验室里发现了一种新的元素。
3. 3. The niobium foil was used to protect the electronics during testing.
   铌箔被用来在测试期间保护电子元件。