1、The metallurgist has made iron into dozens of different metals or alloy steels, as we call them.
冶金學家已用鐵煉成了許多不同的金屬，即我們所稱呼的合金鋼。

2、But the metallurgist USES the word in relation to a wide variety of processes.
但是冶金學家用這個詞來表述很多過程。

3、A the metallurgist has made iron into dozens of different metals or alloy steels, as we call them.
冶金學家已用鐵煉成了許多不同的金屬，即我們所稱呼的合金鋼。

metallurgist翻譯