地球的结构就象鸡蛋，可分为三层。
The structure of the Earth as eggs, can be divided into three tiers.
地质学研究地球的物质组成、地球的结构及地球的形成过程。
Geology deals with the composition of Earth materials, Earth structures, and Earth processes.
地球的结构正在改变，连同太阳系，银河系和宇宙的其他部分。
The configuration of your planet is changing along with the rest of the solar system, galaxy and universe.
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