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stromatolite /ˈstɹɑːtəm ˈspɪnɒsəm/ n

中文：叠层石

中文 · 叠层石Español · estromatolitoFrançais · stromatolite
Meaning：Stratified calcareous concretion formed by microscopic algae (stromatolites), testifying to the existence of the first life-forms more than 3 billion years ago.
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