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单词 θ4946
释义
the world > the earth > structure of the earth > structural features > formations by contents > [noun] > containing fossils > shell impression (1)
mould1671

Geology. A concave impression in rock left by a fossil (more fully internal mould); a convex internal cast of a hollow fossil such as a shell. Also…

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更新时间:2025/1/24 17:54:16