While electricity exists as separate charges, like the plus and minus of a battery, magnets always come in a joined pair;
电可以作为分开的电荷存在，比如说电池的正极与负极，而磁则总是要成双成对地出现。
While electricity exists as separate charges, like the plus and minus of a battery, magnets always come in a joined pair;
电可以作为分开的电荷存在，比如说电池的正极与负极，而磁则总是要成双成对地出现。
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