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Magnet
磁铁
Magnets are very interesting objects.
磁铁是非常有趣的物体。
Each has a positive pole and a negative pole.
每个磁铁都有正负极。
One for each end.
磁铁两端各为一极。
Similar poles push each other away.
磁铁同极相斥，
Different poles pull each other closer.
异极相吸。
A compass is a kind of magnet and it is very useful.
指南针就是一种磁铁，而且非常实用。
With a compass we can easily find where we are.
利用指南针，我们可以轻易地发现我们的位置。
