来自《耶鲁大学开放课程：环境政治与法律 第1集 第1集》

• 
  
  Calculating the magnitude of exposure is really fundamental
  计算暴露程度是非常基本的
• 
  
  to understanding what the risk is.
  对于理解风险有多少来说
• 
  
  And most environmental laws are structured
  绝大多数环境法律的建立
• 
  
  to manage chemicals based on this idea of risk.
  为了去管理化学制品 是基于风险理念
• 
  
  So to understand the risk and to manage it,
  因此理解风险并控制它
• 
  
  you have to understand all of these intermediate issues,
  你不得不理解这其中的所有问题
• 
  
  such as where was it released?
  诸如它和哪里有关
• 
  
  Where does it go?
  它会去哪里
• 
  
  How does it get into your environment?
  它如何进入你的环境中
• 
  
  And what are the likely health effects?
  可能的健康效果是什么
• 
  
  And the word likely is very important, because it implies
  可能这个单词很重要 因为它暗示了
• 
  
  that we need to be thinking probabilistically.
  我们需要概率性地思考