a chemical element. Oxygen is a gas that is present in air and water and is necessary for people, animals and plants to live.氧；氧气Extra Examples- The patient didn't seem to be getting enough oxygen.病人似乎缺氧。
- After dark the plants stop producing oxygen.天黑后植物不再制造氧气。
- There was a risk the brain might be starved of oxygen.大脑可能有缺氧的危险。
- the blood which carries oxygen to the brain把氧输送到大脑的血液
Topics Physics and chemistryb2Oxford Collocations Dictionaryadjectiveverb + oxygenoxygen + nounphrases- a lack of oxygen
- a supply of oxygen
See full entry Word Originlate 18th cent.: from French (principe) oxygène ‘acidifying constituent’ (because at first it was held to be the essential component in the formation of acids).