Fluoridizer
氟化剂, 氟化器
🗣️ 情景例句
In America, it is generally thought that being a workaholic is unhealthy and harmful.
在美国，一般认为工作狂是不健康且有害的。
I'm glad our negotiation has come to a successful conclusion.
我很高兴这次洽谈圆满成功。
It was mailed last week.
上个礼拜我们还没收到。