Fluorides
n. [无化] 氟化物, 氰化物（fluoride的复数形式）
🗣️ 情景例句
The news was announced to the public on TV.
这则消息经由电视向大众宣布。
A cat has nine lives.
猫有九条命。
He usually takes a short walk in the evenings and is always home by seven o'clock.
傍晚常常出去溜达一会儿，并且总是在7点钟以前回来。