All you need is a magnet and some copper wire.

你只需要一根磁铁和一些铜线就可以了。

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Discover how you can use a battery and wire to make a magnet!

发现如何用电池和电线制作磁体！

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Discover how you can use a battery and wire to make a magnet!

发现如何用电池和电线制作磁体！

youdao