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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  because that piece of glass costs $2000.
  因为它值2000美元
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  Okay, so there's this piece of glass, and if I hold it up here
  这就是那片玻片 如果我把它抬起
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  there's a little chip on the bottom of the piece of glass.
  会看到玻片的底端是那芯片
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  I know what I'm looking for.
  我知道我在看什么
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  I don't know if you can see it or not.
  但不清楚你们是否看得清
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  But anyhow it's held into this piece of stuff here.
  总之芯片被嵌在那玻片上
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  And those little tips are pointing up here,
  那些V形顶端朝上
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  but in fact the thing is used upside down
  但实际上这装置是颠倒过来用的
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  so they point down.
  所以顶端其实是朝下
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  So here's that thing mounted in an instrument,
  这样这装置就被安在了这仪器上
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  and you see there's a red light glowing in the glass,
  你可以看到透镜中有红光发出
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  and the reason is it's being irradiated by --
  发光的原因是受激辐射