来自《耶鲁大学开放课程：新生有机化学 第6集 第6集》

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  where they're near but not on; like here, right?
  只要电子在其附近即可 就像这样
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  Now one is a little above the plane,
  其中一点略在某平面上方
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  two are a little below the plane--, right?
  两点略在某平面下方
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  Or vice-versa for the second line, right?
  另一平面的情况可类推
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  But they're pretty close, and they're at a certain spacing.
  这两平面之间有特定间距 但十分接近
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  Now, that spacing is larger than the blue spacing.
  且这个间距比蓝线之间的间距要大
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  Does everybody see that?
  大家发现了没
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  What does that mean about
  这个现象意味着
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  the angle at which the reflection will occur,
  能发生反射的角度
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  or the scattering, where they'll be in phase?
  或使散射波相位相同的角度会怎样变化呢
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  Smaller.
  会变小
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  The angle will be smaller.
  没错 这个角度会变小