来自《耶鲁大学开放课程—哲学：死亡 第24集 第24集》

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  That is, I want us to take a look at, initially, the question,
  我希望大家首先考虑一下
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  under what circumstances,
  在什么情况下
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  if ever, would suicide be the rational thing to do?
  如果有的话 自杀是合理的
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  And then later turn to the question, when,
  然后再关注 在什么情况下
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  if ever, would suicide be a morally legitimate
  如果有的话 自杀是符合道德的
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  or a morally permissible or morally acceptable thing to do?
  或者说符合伦理 符合社会规范
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  In posing this distinction,
  做出这种区别
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  I'm obviously presupposing that these questions can come apart,
  我已经假设了这两个问题是不同的
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  or at least they need to be examined separately.
  或者至少它们需要分开讨论
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  Questions of rationality on the one hand,
  一方面是合理性问题
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  and questions of morality on the other.
  一方面是道德问题
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  These are both questions about oughts, as we might put it.
  可以说 它们都涉及应然性