来自《耶鲁大学开放课程：新生有机化学 第4集 第4集》

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  So these are -- and that,
  你会发现
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  the thing at the top surface where it's flat, is absolutely flat,
  该表面还是较为平坦的
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  except for there's little holes there.
  除了上面有一些小洞
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  And those holes were made by taking this tip and pressing down
  这些洞是由于探针的顶端挤压样品时
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  and scratching a little bit to knock some of the molecules away.
  将少量分子刮离了表面所造成的
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  So the larger pit is five nanometers deep,
  较大的坑洼处大概有5纳米深
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  which means it's four layers of molecules
  也就是说大约4层分子层
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  that've been knocked off in there.
  被刮离了表面
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  And now this is underwater, or underwater in propanol.
  由于样品浸没在水和丙酮的混合溶液中
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  So the crystal is dissolving slowly.
  晶体会逐渐溶解
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  So those pits open up, as molecules come away.
  因此坑洼会随着分子溶解越来越大
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  So watch. Right?
  就像这样