Fluorides
n. [無(wú)化] 氟化物, 氰化物（fluoride的復(fù)數(shù)形式）
??? 情景例句
He came down with the flu, so he didn't go to work.
他感冒了，所以沒(méi)去上班。
Sure. Here it is.
當(dāng)然有。這就是。
Because of this, we kept looking back, wondering if we were leaving a trail of oil and petrol behind us.
因此，我們不時(shí)地掉過(guò)頭，懷疑車(chē)后是否留下了機(jī)油和汽油的痕跡。