noun🔗Shareカルシウム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. "医者は私の骨を強くするために、カルシウムサプリメントを摂取することを勧めました。elementchemistrysubstancematerialscienceChat with AIVocabulary GamePractice Reading
noun🔗Shareこの元素の原子An atom of this element."The scientist studied the calcium atom's structure in the lab. "科学者は実験室でカルシウム原子の構造を研究しました。elementchemistrymineralsubstanceChat with AIVocabulary GamePractice Reading
