Nitralising
硝酸钠溶液浸渍净化法
🗣️ 情景例句
I'm afraid I didn't get on very well in the exam.
我这次考试恐怕不太顺利。
He knocks boldly at the door who brings good news.
彼叩门声响，必来报佳音。
I'll see that doesn't happen again.
我会注意以后不会再发生那样的事。