Fluoridizer
氟化剂, 氟化器
🗣️ 情景例句
She is everything I've ever wanted.
她是我想要的一切。
Have you been busy with schoolwork?
学校的功课很忙吗？
Yes, I'll do that.I'm sorry about that.
是，我重打。对此我感到很抱歉。