Nitrozation
亚硝化作用
🗣️ 情景例句
The fifth word is seven.
第五个字是七。
He plays with my friends every day.
他每天都和我的朋友玩。
They were expecting a valuable parcel of diamonds from South Africa.
他们正期待从南非来的一个装着钻石的贵重包裹。