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The earth has a core and a mantle around it.
地球的中心是地核，地核的周围是地幔。
youdao
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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。
youdao
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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。
youdao