1·You see he mentioned smelting.
你看他提到了熔炼。
2·When he said smelting, I said, OK, you got it.
当他说熔炼，我会说，好，你明白了。
3·Power shortages have disrupted mining and smelting in several countries.
动力短缺已经使多个国家的采矿和熔炼中断。
4·Too often such smelting, like that pictured here in Vietnam, happens in backyards without any pollution controls.
像图中的越南，通常这样的熔炼在是距离住所很近而且没有任何污染控制的地方进行的。
5·The ore will be heated toalmost 2, 000 degrees Celsius (3, 600 degrees Fahrenheit) during smelting.
在熔炼过程中，矿石将要被加热到几乎摄氏两千度（华氏三千六百度）。