Floran
[医]氟化钠, ； 氟化亚锡
🗣️ 情景例句
Just fine.
相当不错。
Don't take any notice of what he says-he's pulling your leg.
别理睬他，他在跟你开玩笑。
Which language is spoken by the largest number of people in the world?
世界上哪种语言说的人最多？