Fluorosilicate
氟硅酸盐
🗣️ 情景例句
Yes?
什么事？
Thank you for inviting us; we had a wonderful time.
谢谢您的邀请，使我们过得很快乐。
She left home when she was eighteen and has lived in Los Angeles for the past fifteen years.
18岁时，她离开了家。过去的15年里她一直住在洛杉矶。