来自《耶鲁大学开放课程：环境政治与法律 第2集 第2集》

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  has led the Army, the Air Force, the Navy
  使得海陆空三军
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  to basically close bases, walk away,
  彻底关闭一些基地 从中撤离
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  and clean up according to standards
  根据他们确信是安全的标准
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  that they believe are safe.
  来进行清场
• 
  
  So this will be a story about standard setting that turns into
  这是一个有关标准设定所引发的
• 
  
  a story about chemicals moving in the marine food chain.
  化学物质进入海洋食物链的问题
• 
  
  You've heard about mercury in tuna.
  大家听说金枪鱼体内有汞
• 
  
  You've probably heard about mercury in shark
  可能也听说过鲨鱼和其他大型食肉鱼类
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  and large predatory fish.
  体内有汞
• 
  
  But you probably haven't heard about mercury in the array of
  但你可能没有听过说加勒比海中
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  tropical fish that exist in the Caribbean seas.
  一群热带鱼体内也发现有汞
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  Well, that's because they haven't been studied.
  因为并未对它们进行过研究