Fluorosilicate
氟硅酸盐
🗣️ 情景例句
Please give me a wake up call at 7:30 am tomorrow.
请在明早七点半叫醒我。
What number should I dial to get the operator?
我应该拨什么号码找到接线员？
What I saw made me very sad.
我所见到的一切使我非常难过。