| 释义 |
nitrogen/ˈnaɪtrədʒən ||; ˈnaɪtrədʒən/noun [u] (symbol n) a gas that has no colour, taste or smell. nitrogen forms about 80% of the air around the earth. 氮；氮气 ni·tro·gen /`naɪtrədʒən; ˈnaɪtrədʒən/n [u]a gas that is an element and is the main part of the earth's air 氮（气） |