Deoxygenization
除氧
🗣️ 情景例句
If I marry you, there are going to be some ground rules.
要我嫁给你，有一些基本前提。
How long will the sale last?
折价销售多久？
Yes, it is.It's very urgent.I feel awful. I have a terrible toothache.
是的，很急。我难受极了，牙痛得要命。