| 释义 |
nitrogen/ˈnaitrədʒ(ə)n/n. Chem. a colourless odourless unreactive gaseous element that forms four-fifths of the earth's atmosphere and is an essential constituent of proteins, nucleic acids, and other biological molecules (symbol 符 N) 【化】(化学元素)氮 □ nitrogenous /-ˈtrɒdʒinəs/ adj.[French nitrogène (as NITRO-, -GEN)] |