来自《耶鲁大学开放课程：聆听音乐 第20集 第20集》

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  Tchaikovsky's not a developer.
  柴科夫斯基就不擅长发展
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  He has trouble when it comes to developing themes,
  就发展主题而言他就会有问题
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  but Beethoven--Mozart's a developer,
  但是贝多芬--莫扎特擅于发展
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  Beethoven is a developer, Brahms is a developer,
  贝多芬 勃拉姆斯 也都擅长
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  Mahler is a developer, and what they develop is,
  马勒擅长 而他们所发展的
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  as I say, a nexus of musical material.
  是一种音乐素材的连结
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  So this here is the initial idea
  这儿是一个起始的概念
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  and we can go back to our technique
  接着我们回到技法上
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  and then we'd go back down to the
  然后我们回到
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  , which would lead back to the tonic.
  被引到这个主音上
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  So we could have one more X down here
  所以你可以在这下面多一个X
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  but it's the same X as up there.
  上面也有同样的一个X