In fact, this particular word, here, is often used in refining of gold of impurities.
实际上，这个词语，常用于提炼纯金的过程。
The closest thing we have to modern-day alchemy may be the work of Kosaka Smelting and Refining, the Japanese firm that harvests gold and other valuable metals from old electronics.
可能最能称得上“现代炼金术”的就是小坂冶炼和精炼公司正在做的事了，这家日本公司从旧电器中回收金和其他有用的金属。
Using mercury to separate gold from rock, millions of small-scale miners worldwide inhale toxic vapors during the refining process, exposing themselves to neurological and genetic damage.
由于用水银从矿石中分离金，全世界数百万小规模采矿者在精炼过程中吸入水银蒸汽，使他们的神经和遗传受到损害。
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