magnetic high

例句：

1. 1.The magnet attracts iron filings to its north pole.
   磁铁吸引铁屑到其北极。
2. 2.Magnetic fields are used in navigation systems.
   磁场用于导航系统。
3. 3.The scientist discovered a new type of magnetic material.
   科学家发现了一种新的磁性材料。