来自《耶鲁大学开放课程：聆听音乐 第20集 第20集》

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  all of the different keys and extenders,
  各种功能的键都有
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  and that's all an invention of the nineteenth century.
  所有的这些都是十九世纪的发明
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  They completely reconfigured the flute and
  在十九世纪 他们完全重新配置了长笛
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  how you play it in the nineteenth century.
  和演奏方法
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  And we've talked about all these other instruments that got added.
  我们已经谈论了所有这些增加的乐器
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  So a kind of technological revolution was applied
  因此 技术革新也被运用到
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  to musical instruments too, but the most interesting thing is,
  乐器当中 但是最有意思的是
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  when you got all these instruments together,
  当你把所有的乐器到集中在一起的时候
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  how much sound they could make.
  他们能发出多大的声音呢
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  Let's say you were in the--you lived in the nineteenth century
  假设你生活在十九世纪
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  and you wanted to hear the biggest sound that could be made.
  你想听到能被制造出来的最大的声音
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  What do you think you would do?
  你认为你会如何做