Fluoridating
v. 在饮水中加少量之氟（以防儿童蛀牙）( fluoridate的现在分词 )
🗣️ 情景例句
What's up?
什么事？
One sin opens the door for another.
一个罪恶常为另一个罪恶开门。
With the medicine box under her arm, Miss Zhao hurried off to look after the man.
夹起药箱，赵小姐匆忙去照料那个人。