Fluorosilicate
氟硅酸鹽
??? 情景例句
What did you bring?
你帶的什么帶子？
I like playing football.
我喜歡踢足球。
I'm very sorry, sir.You must get off the bus.None of our passengers can change this note.
非常抱歉，先生。您必須下車。我們的乘客中沒人能換開這張鈔票。