Prodan
氟硅酸钠
🗣️ 情景例句
Absolutely right, Frank.
完全正确 ，Frank。
I'll see if she's in.
我去看看她在不在。
There's a very important Chinese deer called the milu deer.
有一种非常珍贵的中国鹿，叫做麋鹿。