noun 下载 🔗分享 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. Examples : "We need oxygen to breathe. " 我们需要氧气来呼吸。 element substance chemistry science 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 氧气，二氧。 Molecular oxygen (O2), a colorless, odorless gas at room temperature, also called dioxygen. Examples : "We need oxygen to breathe. " 我们需要氧气呼吸。 element substance chemistry material science 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 氧气，助氧，给氧. A mixture of oxygen and other gases, administered to a patient to help them breathe. Examples : "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。 medicine physiology aid substance 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 氧原子，氧。 An atom of this element. Examples : "The scientist studied the oxygen atom in the lab. " 科学家在实验室里研究氧原子。 element chemistry substance science 与AI对话词汇游戏阅读练习
