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
When does the next train leave for New York?
到纽约的下一趟火车什么时候开车？
No man ever yet became great by imitation.
笑颦不能成西施。
In the evening I do my homework.
晚上我做作业。