| 单词 | oxygen |
| 释义 | oxy·genBrE /ˈɒksɪdʒən/ NAmE /ˈɑːksɪdʒən/ noun [U ] (symbol O ) 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 |
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