来自《耶鲁大学开放课程：1600年后西方社会的流行病 第7集 第7集》

• 
  
  that liquid material from a smallpox pustule--
  取天花病人脓包中的液体
• 
  
  you saw those last time--
  上次你们见过的那种液体
• 
  
  of a patient selected for having a
  液体要适量 不能超过温和化的天花病
• 
  
  very mild case was allowed to
  所需要的量
• 
  
  soak into a thread.
  用一根线吸取这些液体
• 
  
  The thread was then inserted into a superficial cut,
  然后用你们在以前的课时里见过的刺血针
• 
  
  made with the lancet--this sharp instrument that you've
  在要保护之人手臂表皮
• 
  
  seen pictures of, in an earlier lecture--into the
  切一个伤口
• 
  
  arm of the person to be protected,
  将线放入伤口中
• 
  
  and fastened there for twenty-four hours.
  系紧 放置24小时
• 
  
  Twelve days later, the subject usually fell ill
  一般在十二天以后 被保护之人会
• 
  
  with smallpox; hopefully suffered from a mild
  产生天花病症状 幸运的话