来自《耶鲁大学开放课程：有关食物的心理学、生物学和政治学 第11集 第11集》

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  Here are a few facts about BT corn.
  这里列出了Bt玉米的一些相关信息
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  Licensed for use in 1996,
  于1996年批准种植
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  so it hasn't been around all that long,
  可见时间并不长
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  it's now 35% of the U.S. corn crop and growing.
  现占美国玉米作物种植总量的35%
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  The concerns about it are
  现在我们所担心的是
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  that it travels long distances in the ecosystem.
  这种玉米对生态系统会造成深远影响
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  If that slide that I showed you before
  如果我之间展示的那张
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  from The University of Illinois would be typical,
  来自伊利诺伊大学的幻灯具有代表性的话
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  the genetically modified corn is not--
  那么该转基因玉米
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  and it's by products in the corn plant
  及其在玉米种植业的副产品的影响范围
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  are not going to be confined to that particular field
  将不仅仅局限于那片种植区域
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  because they'll be carried elsewhere,
  因为它们会被传播到别处