Fluorin
n. [化]氟
🗣️ 情景例句
No. I have nothing to declare.
没有。我没有什么要申报的。
Thank you but this is something I have to do on my own.
但有些事情我必须自己做主。
He was on his way to a lecture, when a tourist stopped him and asked him for directions.
他走在去听课的路上，此时一位游客拦住他问路。