来自《耶鲁大学开放课程：基础物理 第4集 第4集》

• 
  
  That's to really say we're finished with the plane.
  这次真的要说我们结束斜面学习
• 
  
  Once you can do that,
  一旦学会做那个题
• 
  
  you've graduated from this boot camp;
  你就脱离新手阶段了
• 
  
  you can handle anything else.
  可以处理任何同类问题
• 
  
  But that's not something I want to do in class.
  但题目我不想在课堂上讲
• 
  
  That's something you do in the privacy of your room,
  那应该是你独立完成的东西
• 
  
  put all these things in and crank it up.
  根据所有已知条件把题目解出来
• 
  
  And you also have enough time.
  你们有足够的时间
• 
  
  But that's a very--
  但那是个非常...
• 
  
  that's got some interesting angles you should think about.
  你应该思考一下其中某些有趣的角度
• 
  
  Okay, so now I'm going to do physics
  好 现在继续讲物理
• 
  
  that basically involves rotational motion.
  涉及一些很基础的旋转的问题