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词汇 earth nucleus
释义 earth nucleus
基本例句
地核
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。
The entire earth may have been melted, and the iron and silicate components separated to form the core and mantle.整个地球被熔化,铁和硅酸盐分离而形成地核和地幔。
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