noun🔗Share钙， 钙元素 The chemical element (Symbol Ca), with an atomic number 20. It is a soft, silvery-white alkaline earth metal which occurs naturally as carbonate in limestone and as silicate in many rocks."My doctor recommended I take a calcium supplement to strengthen my bones. "我的医生建议我服用钙片来增强骨骼。elementchemistrysubstancematerialscienceChat with AIVocabulary GamePractice Reading
noun🔗Share钙原子，钙元素. An atom of this element."The scientist studied the calcium atom's structure in the lab. "科学家在实验室研究了钙原子的结构。elementchemistrymineralsubstanceChat with AIVocabulary GamePractice Reading
