Fluorination
n. 氟化作用
🗣️ 情景例句
Robbie, this new Walkman is absolutely wonderful. Robbie
Robbie 这个新的随身听真棒。
Do you have any idea on this subject?
对于这个题目你有什么看法？
Yes. What day is it tomorrow?
有。明天是什么日子？