Geology: the scientific study of the origin, history, and structure of the earth.
地质学对地球起源、历史和结构的科学研究。
The origin and function of the membrane-like structure have not been found out yet.
两类环状片层的区别仅在于后者存在膜状结构。
The origin and function of the membrane-like structure have not been found out yet.
两类环状片层的区别仅在于后者存在膜状结构。
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