电磁石

例句：

1. 1. The magnetic stone attracts iron filings to its core.
   磁性石头吸引铁屑到其核心。
2. 2.The magnetized stone can be used as a tool for picking up small objects.
   磁化的石头可以用来捡起小物件。
3. 3. The magnetic stone is often used in industrial processes to separate materials.
   磁化石头经常用于工业过程以分离材料。