The planet's magnetic field is generated by the motion of molten iron flowing around a superhot, solid iron core.

地球内部的熔铁围绕其核心的超高温固体铁核流动，由此产生了地球磁场。

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The Earth's magnetic field is generated as the molten iron of the Earth's outer core revolves around its solid inner core; when surges in the molten iron occur, magnetic tempests are created.

地球磁场是由地球外核的熔铁围绕固体内核旋转而产生的；当铁水激增，就会发生磁暴。

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The Earth's solid inner core was formed by the freezing of iron rich liquid materials making up the outer core.

地球内核由外核富含铁元素的液态物质结晶而成。

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The inner core, made of very pure, solid iron, rotates along with the outer core, dragging the Earth's magnetic field with them.

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