Fluoridationist
n. 提倡公共用水氟化的人
🗣️ 情景例句
It was an extremely difficult and dangerous task.
这是一项极度困难的危险的工作。
He has graciously consented to speak to us on that subject tonight.
他同意今晚他将就这一专题演讲。
He can't make it today. He has to stay at home.
他今天不行了。他得呆在家里。