来自《耶鲁大学开放课程—哲学：死亡 第9集 第9集》

• 
  
  at least given the science as we understand it.
  至少就我们所理解的科学是这样认为的
• 
  
  I mean, dragons are supposed to breath fire.
  据说龙可以喷火
• 
  
  So that must mean they've got fire in their belly.
  那也是说它肚子里肯定得有火
• 
  
  But how does the fire continue to exist in their belly,
  但是火怎么可能一直在它肚子燃烧着呢
• 
  
  absent--lack of oxygen?
  肚子里又没氧气
• 
  
  Why isn't the fire in their belly busy burning
  而且它肚里的火怎么没有
• 
  
  and destroying the membranes of their stomach or whatever?
  烧坏它的胃粘膜什么的呢
• 
  
  All right, you could, I suppose,
  我想你也许会
• 
  
  try to prove that dragons were scientifically impossible.
  试着从科学角度证明龙是不可能存在的
• 
  
  And if you could,
  如果你能证明的话
• 
  
  then you'd have an extra reason to not believe in them.
  那你又有个理由可以相信它们不存在了
• 
  
  But it's not as though you have to prove that
  但不是说你只有证明了某物不可能存在