magnetic medical massaging apparatus

例句：

1. 1. The magnet attracts ironfilings to it.
   磁铁吸引铁屑。
2. 2.The new car has a magnetic key thatopens the door.
   新车有一个磁性钥匙可以开门。
3. 3. The magnet is strong enough to holdmetal objects together.
   磁铁足够强，能将金属物体结合在一起。