Fluorination
n. 氟化作用
🗣️ 情景例句
It is also not polite to ask people questions about politics.
另外，问一些关于政治和宗教的问题也是不礼貌的。
Please tell him to stop running in and out.
请告诉他不要跑进跑出。
I'm afraid we haven't got any black shoes in that size at the moment.
恐怕此刻我们没有8号的黑色鞋了。