However, rare earth is often radioactive. Moreover, in the smelting and extraction of rare earth, dangerous chemicals are frequently used, thus polluting local air, water and land.

但是，稀土生产往往带有放射性，加工企业在冶炼和分离稀土时，也经常使用危险的化学品，周围的空气、水和土地容易遭到污染。