来自《耶鲁大学开放课程：新生有机化学 第5集 第5集》

• 
  
  but we don't care about it,
  这个我们先不关心
• 
  
  at least not until next semester
  至少在下学期
• 
  
  when we talk about nuclear magnetic resonance,
  我们讨论核磁共振前不用关心
• 
  
  because the electric field
  因为电场
• 
  
  is so much stronger in its effect on molecules.
  对分子的影响要大得多
• 
  
  Now, its effect is on charges; on electrons, on protons,
  它作用于电荷 电子 质子
• 
  
  therefore on nuclei.
  当然还有原子核
• 
  
  Now, accelerated electrons scatter light.
  被加速的电子会使光发生散射
• 
  
  So here comes the light in.
  现在光射过来
• 
  
  We'll see if this works.
  我们看下能不能正常显示
• 
  
  Okay, so it makes the electron go up and down,
  当光会经过时
• 
  
  as the light goes by.
  电子会上下运动