Subfluoride
低氟化物, 氟化低价物
🗣️ 情景例句
I'm sorry, but I've got to be on my way.
很抱歉，我必须走了。
From all listed prices we allow a discount of 10 percent on orders received on or before 31st May.
5月31日或此前收到的订单，我们都按价目单上的价格给10%的折扣。
I have been offered a large sum of money to go away, but I am determined to stay here.
他们曾向我提供一大笔钱让我搬走，但我决定留在这儿。