Fluorides
n. [无化] 氟化物, 氰化物（fluoride的复数形式）
🗣️ 情景例句
Let me foot the bill tonight. Maybe you can treat me next time.
今晚让我付账吧，也许下次你请客。
What number are you calling?
你打什么号码？
Where did you get such a nice tan?
你到哪把皮肤晒成棕色的？