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TOEFL IELTS BNC: 4908 COCA: 5615
calcium
kælsiəm ˈkælsiəm
N-UNCOUNT Calcium is a soft white element which is found in bones and teeth, and also in limestone, chalk, and marble.
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TOEFL IELTS BNC: 4908 COCA: 5615
TOEFL IELTS BNC: 4908 COCA: 5615
TOEFL IELTS BNC: 4908 COCA: 5615
calcium
Chemical elements: actinium, alkali metal, americium...

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