来自《耶鲁大学开放课程：基础物理 第7集 第7集》

• 
  
  I thought before going into today's topic,
  我觉得在开始今天的课题之前
• 
  
  I will give you a five-minute summary of
  我先花五分钟时间来总结
• 
  
  what happened last time.
  上节课的内容
• 
  
  So, you guys are saying,
  你们可能会说
• 
  
  "Look,
  "看吧
• 
  
  it looks like
  你好像
• 
  
  you got carried away with this thing;
  总是纠缠于这件事
• 
  
  we just want to know
  我们只想知道