The attraction and repulsion of magnets
磁铁的吸引和排斥

Magnets will atrracted to the different poles, will repulsed to the same poles.

磁铁会互相吸引和互相排斥，同性相斥，异性相吸。

同性：南极和南极， 北极和北极 （相斥）
Same poles:
North pole and North pole , South pole and South pole (repulse)异性：南极和北极， 北极和南极 （相吸）
Different poles:
South pole and North pole, North pole and South pole (attract)