Nitralising
硝酸钠溶液浸渍净化法
🗣️ 情景例句
What happened?
怎么样？
I feel terrible about it.
太对不起了。
Before you leave the lab, make sure the electricity is turned off and the windows are shut.
你们离开实验室前，务必要关上电源，关好窗户。