Spin any electric charge and you get a magnetic field.

当你把任意电荷旋转起来，就能得到磁场。

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Think about how the flowers of the field grow; they do not work or spin.

试想田野的百合花怎样生长，它们不劳苦，也不纺织。

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Think about how the flowers of the field grow; they do not work or spin.

试想田野的百合花怎样生长，它们不劳苦，也不纺织。

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