Right below your feet is the magma of the earth, the core of the earth.
正正你脚底下就是地球的岩浆，地球的核心。
The magnetic core of the Earth is moving, literally changing directions inside the Earth.
地球核心的磁场正在移动，不加夸张地说，地球内部的方向在发生变化。
Internally the earth consists of two parts, a core and a mantle.
地球的内部由两部分组成：地核和地幔。
Internally the earth consists of two parts, a core and a mantle.
地球的内部由两部分组成：地核和地幔。
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