Ferrooxidant
鐵氧化劑
??? 情景例句
No, he never did.
沒有， 從來沒有。
Venture a small fish to catch a great one.
吃小虧占大便宜。
That's not allowed. Once you are in here, listen to your teacher.
那是不允許的。一旦進來了，你們要聽老師的話。