Fluorides
n. [无化] 氟化物, 氰化物（fluoride的复数形式）
🗣️ 情景例句
I'm sorry you have to leave so soon.
很遗憾你不能多呆会儿。
It's a bit too hard.
这有点太难了吧。
Of course, everyone began to shout very loudly.
当然，每一个人都开始大声地喊叫。