那天的课堂实验是为了展示加热一个盛水的容器会如何让空气冒泡到表面。

The class experiment that day was to show how heating a container of water would bring air bubbling to the surface.

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这些问题只是涉及到表面。

These problems just scratch the surface.

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记者：那些问题是怎样浮到表面的？

Reporter: How do issues bubble to the top?

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And, when zinc sulfide is hit by particles or by anything, by radiation or by particles of greater than a certain critical energy, there is a glow.

当粒子或其他东西,通过辐射或粒子的方式，并且能量高于临界值,撞击到硫化锌的表面上的时候，就会发光。

麻省理工公开课 - 固态化学导论课程节选

So the Paiddeia is precisely about that formation of changing and shift from the superficial to the substantial.

因此，教育就是关于改变人的认知,从表面的认知到深入的认知。

普林斯顿公开课 - 人性课程节选

As one of the great readers of Plato : of the last century once said, "Only the surface of things " reveals the essence of things."

如同上个世纪一位重要的柏拉图读者,曾说到，“仅有事物的表面,尽展其精华“

耶鲁公开课 - 政治哲学导论课程节选