“金叶子”非虚构：树叶中真有黄金
<p><span word="Money">Money</span> <span word="really">really</span> <span word="does">does</span> <span word="grow">grow</span> <span word="on">on</span> <span word="trees">trees</span> – <span word="at">at</span> <span word="least">least</span> <span word="in">in</span> <span word="Australia">Australia</span>.</p><p>树上真的可以长黄金——至少在澳大利亚是如此。</p><p><span word="Scientists">Scientists</span> <span word="have">have</span> <span word="found">found</span> <span word="gold">gold</span> <span word="in">in</span> <span word="the">the</span> <span word="leaves">leaves</span> <span word="of">of</span> <span word="eucalyptus">eucalyptus</span> <span word="trees">trees</span>.</p><p>科学家们在桉树树叶里找到了黄金。</p><p><span word="The">The</span> <span word="particles">particles</span> <span word="are">are</span> <span word="much">much</span> <span word="too">too</span> <span word="small">small</span> <span word="to">to</span> <span word="be">be</span> <span word="seen">seen</span> <span word="with">with</span> <span word="the">the</span> <span word="naked">naked</span> <span word="eye">eye</span> <span word="but">but</span> <span word="have">have</span> <span word="been">been</span> <span word="detected">detected</span> <span word="using">using</span> <span word="a">a</span> <span word="type">type</span> <span word="of">of</span> <span word="x">x</span>-<span word="ray">ray</span> <span word="that">that</span> <span word="is">is</span> <span word="especially">especially</span> <span word="good">good</span> <span word="at">at</span> <span word="picking">picking</span> <span word="up">up</span> <span word="trace">trace</span> <span word="amounts">amounts</span> <span word="of">of</span> <span word="metals">metals</span> <span word="and">and</span> <span word="minerals">minerals</span>.</p><p>这种树叶中含有的黄金粒子十分微小，不足以凭肉眼观察到，但是科学家们通过一种专门探查微量金属和矿物的<span word="X">X</span>射线仪器发现了它们。</p>
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