Nitrification
n. 氮化合, 氮飽和, 硝化作用\\n[化] 硝酸化作用
??? 情景例句
This must be a proud day for you.
今天是你值得驕傲的一天。
Ahh!
啊哈！
Eric had been the eldest son of the family, very much older than his two brothers.
埃里克是這家長子。