In today's experiment you will harness the power of magnetic repulsion to make a magnet levitate.

今天的实验中，你将利用磁性拒斥的作用来制作一个飘浮磁铁。

youdao

Maglev technology has been around for years as the propulsion method behind certain European and Asian trains, and basically involves using the Physics 101 properties of magnetic attraction and repulsion to provide an object with momentum.

ENGADGET: Maglev elevators to scare us all by 2008