Combined nitrogen
[化] 结合氮; 固定氮
🧩 词语组成解析
combined
[[kəm'baind]]
a. 结合的；组合的
🗣️ 情景例句
and a book of photos about the United States still feels right.
而一本关于美国的摄影集仍然很有前景。
Happy Spring Festival!
春节快乐！
At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk.
在洛杉矶的一个特设的游泳池里，孩子们甚至在还没有学会走路时就已经能熟练地在水下屏住呼吸了。