钙是人体健康和长寿不可缺少的重要元素，钙的生理功能及缺钙对人体健康的影响日益受到重视。
Calcium is an important element for a good health and long life. Importance is increasingly attached to its physiological function and the impact of calcium deficiency on human health.
钙是人体健康和长寿不可缺少的重要元素，钙的生理功能及缺钙对人体健康的影响日益受到重视。
Calcium is an important element for a good health and long life. Importance is increasingly attached to its physiological function and the impact of calcium deficiency on human health.
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