Fancy a punt on praseodymium? The world of commodities investing has taken a radical romp across the periodic table. Once mostly limited to Au, Ag, Cu, Pt and various combinations of H and C, the usefulness of dozens of other elements in modern technology has spurred interest in funds that track producers or, when possible, hold stockpiles of rare substances.
想炒一把镨吗？大宗商品投资界已把整张元素周期表炒了个遍。以前投资者的兴趣主要集中在金、银、铜、铂以及各种碳氢化合物上。如今，由于其它许多种元素在现代科技中具有实用性，那些追踪稀土元素生产商、或在可能之时囤积稀土元素的基金也变得吃香起来。
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