In 1920, the United States led the world iniron and steel manufacturing.
美国的钢铁制造业在1920年领先于世界。
《柯林斯英汉双解大词典》
2
They have tried to reconstruct the settlement as it would have been inIron Age times.
他们已试着按铁器时代的样子重建这个小村落。
《牛津词典》
3
But, unlike the cores of the inner planets, the Moon's core contains little or no iron, while the typical planet-forming materials were quite rich iniron.