科学家发现甜食与癌症有关！
<p><span word="There">There</span>'<span word="s">s</span> <span word="a">a</span> <span word="long">long</span>-<span word="known">known</span> <span word="relationship">relationship</span> <span word="between">between</span> <span word="cancer">cancer</span> <span word="and">and</span> <span word="sugar">sugar</span>, <span word="but">but</span> <span word="figuring">figuring</span> <span word="out">out</span> <span word="exactly">exactly</span> <span word="how">how</span> <span word="it">it</span> <span word="works">works</span> <span word="has">has</span> <span word="proven">proven</span> <span word="elusive">elusive</span> . <span word="Now">Now</span>, <span word="thanks">thanks</span> <span word="to">to</span> <span word="a">a</span> <span word="nine">nine</span>-<span word="year">year</span> <span word="research">research</span> <span word="project">project</span>, <span word="scientists">scientists</span> <span word="have">have</span> <span word="made">made</span> <span word="a">a</span> <span word="breakthrough">breakthrough</span>.</p><p>甜食和癌症之间的关联性早已为人所知，但它发挥作用的机制却一直破朔迷离。幸而现在科学家们通过一项历时九年的研究，做出了突破性的进展。</p><p><span word="They">They</span>'<span word="ve">ve</span> <span word="narrowed">narrowed</span> <span word="down">down</span> <span word="the">the</span> <span word="mechanism">mechanism</span> <span word="whereby">whereby</span> <span word="cancer">cancer</span> <span word="cells">cells</span> <span word="metabolise">metabolise</span> <span word="sugar">sugar</span>.</p><p>对癌症细胞如何代谢糖分这一谜题，研究者甄选出了一些可能性。</p>
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