magmatist

例句：

1. 1. The magnet attracts iron filings to it.
   磁铁吸引铁屑。
2. 2.Magnets are used in many industrial applications.
   磁铁在许多工业应用中被使用。
3. 3.The scientist discovered the phenomenon of magnetic resonance.
   科学家发现了磁共振现象。