... ous shale 灰质页岩 calcareous shell 钙质介壳 calcareous silicate rock 钙质硅酸盐岩 ...
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... calcareous shale 石灰质页岩,钙质页岩... calcareous shell 钙质壳 calcareous crust 钙积层 ...
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calcareous-shell 钙质壳
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Ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell.
卵形身体的十肢头足类动物，窄的鳍和身体一样长，钙质内壳大。
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