Ferrous metals
[化] 铁类金属; 铁基金属; 黑色金属; 铁三素组(指铁钴镍)
🧩 词语组成解析
五金
🗣️ 情景例句
Do you want a first class, business class or economy seat?
你想要头等舱、商务舱还是经济舱？
Four eyes see more than two.
人多识广。
' The manager was sympathetic, but he could do nothing.
”经理深表同情，但却无能为力。