Fluorating
氟化
🗣️ 情景例句
I see.
哦。
As a man lives,so shall he die.
有生必有死。
It is no use offering the manual labourer, tired out with a hard week's sweat and effort,
对于流汗出力干了一周苦活的体力劳动者来说，是不合适的；