Fluorosilicate
氟硅酸盐
🗣️ 情景例句
Even when I have a cold, I still have a good appetite.
我就是感冒了，胃口也照样很好！
Is it convenient to you if I come at 6 p.m.?
如果我下午6点来拜访你，方便吗？
I would like to ask you a favor.
我可以提出一个要求吗？