| 词汇 | nitrogen | 
| 释义 | nitrogen  noun [ U ] uk/ˈnaɪ.trə.dʒən/ us/ˈnaɪ.trə.dʒən/ (symbol N)  氮(气) a chemical element that is a gas with no colour or taste, forms most of the earth's atmosphere, and is a part of all living things | 
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