noun🔗Share氧气，氧。 The chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. It is a colorless and odorless gas."We need oxygen to breathe. "我们需要氧气来呼吸。elementsubstancechemistryscienceChat with AIVocabulary GamePractice Reading
noun🔗Share氧气，二氧。 Molecular oxygen (O2), a colorless, odorless gas at room temperature, also called dioxygen."We need oxygen to breathe. "我们需要氧气呼吸。elementsubstancechemistrymaterialscienceChat with AIVocabulary GamePractice Reading
noun🔗Share氧气，助氧，给氧. A mixture of oxygen and other gases, administered to a patient to help them breathe."The nurse administered oxygen to the student who fainted in the school hall. "护士给在学校大厅晕倒的学生吸氧。medicinephysiologyaidsubstanceChat with AIVocabulary GamePractice Reading
noun🔗Share氧原子，氧。 An atom of this element."The scientist studied the oxygen atom in the lab. "科学家在实验室里研究氧原子。elementchemistrysubstancescienceChat with AIVocabulary GamePractice Reading
