Fluorides
n. [无化] 氟化物, 氰化物（fluoride的复数形式）
🗣️ 情景例句
I have no idea about fashion there days, which is why I dress so plainly.
我对现在的时装潮流一窍不通，这就是我穿得这么普通的原因。
We are sure to defeat them.
我们一定会打败他们。
That would be a waste of money. What's your opinion?
那就浪费钱了。你的意见呢？