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
He was very helpful to me, remember?
他帮过我大忙， 记得吗？
Close your book,please.
请把书合上。
'I suppose it would, but I never catch a later train.'
“我认为可以，但我从来不乘晚一点儿的车。”