magnetic vibrator

例句：

1. 1. This magnet vibrator can attract iron objects.
   这个磁振动器能吸引铁质物体。
2. 2.The magnet vibrator is used to test the strength of the magnetic field.
   磁振动器用于测试磁场的强度。
3. 3. The magnet vibrator was invented by a scientist who was trying to find a way to make the world smaller.
   磁振动器是由一位科学家发明的，他试图找到一种使世界变小的方法。