Fluoridizing
v. 用氟化物处理( fluoridize的现在分词 )
🗣️ 情景例句
He needs to work.
他需要工作。
When were you born?
你是什么时候出生的？
When she got to the shop, she bought all the things on the list.
去到商店后，她把单上所列物品全都买了。