Fluoridizer
氟化剂, 氟化器
🗣️ 情景例句
You won't be disappointed, Mr. Carlson. Thanks.
我不会让你失望的 Carlson先生。谢谢 。
Excuse me for that.
对不起我为那件事。
Many of the tourists on board had begun bargaining with the tradesmen, but I decide not to buy anything until I had disembarked.
船上许多游客开始同商贩讨价还价起来，但我打定主意上岸之前什么也不买。