noun🔗Share氮气，氮。 The chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas."The air we breathe is mostly nitrogen. "我们呼吸的空气主要成分是氮气。elementsubstancechemistryscienceChat with AIVocabulary GamePractice Reading
noun🔗Share氮气，氮。 Molecular nitrogen (N2), a colorless, odorless gas at room temperature."The air we breathe contains nitrogen. "我们呼吸的空气中含有氮气。elementsubstancechemistrycompoundmaterialscienceChat with AIVocabulary GamePractice Reading
noun🔗Share氮，氮原子，氮同位素 A specific nitrogen within a chemical formula, or a specific isotope of nitrogen"The two nitrogens are located next to one another on the ring."这两个氮原子在环上彼此相邻。elementchemistrysubstancescienceChat with AIVocabulary GamePractice Reading
