Non-ferrous
adj. 有色的，非鐵或鋼的（金屬）
?? 詞語組成解析
non
[[n?n]]
adv. 非, 不
??? 情景例句
That a boy.
對了。
It is convenient to know the language.
掌握這門語言會帶來方便。
It was the first joy I had known for years.
我豁然開朗了。這是我多年來第一次感到高興的事了。