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And from time to time, particularly in section discussion, you will have occasion to consider the ways in which sometimes in very contradictory ways--over the centuries.
在课堂讨论中，大家需要不断地去考虑,有时候甚至可能是持续几个世纪的完全相反的说法。
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I know, lonely, but that's what happens from time to time.
我知道，这样会有点孤单，但这是很正常的。
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suppose I asked you to time a 100 meter spring in the Olympics, but I give you a stopwatch that is measured in units of 15 seconds?
如果我要求你,在奥林匹克数给100米短跑计时，但我会给你一个秒表,它可以测出15秒的大小？
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And we will walk to Room 1190 and show the film, and there won't have to time to discuss today.
我们会走去1190房间看电影，我们今天没时间讨论了。
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And of course, anybody from time to time, there are individuals who thought that monarchy might be a fine thing.
当然,时不时也会有人认为,君主制可能也不错
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It is a book that one of you will go back to time and time again and it will stick with you forever.
那是一本你们其中一人,会不断回顾的巨著,而且永世追随。
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Most people think that it's not a smart thing to do-- to try to time the market.
大多数人认为把握市场时机,是不是明智的选择
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And that's something that we'll talk about from time to time in the class, but it's something you'd get more out of,for example, if you studied an art history class, or if you studied a literature class that talked about some of these issues in later European times.
这些我们在课堂上,会经常讨论，但如果你参加其他课，会学到得更多，比如艺术史课程，或者文学课,也会讨论欧洲各个时期的宗教问题。
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From time to time, they wandered to Egypt or Mesopotamia often in search of pasture for their animals. And various details of their language, their customs, their laws, their religion, it's argued, seem to fit well into the period of the Late Bronze Age.
时而不时的，他们常在埃及或美索不达米亚游荡,为他们的牲口寻找牧场，大量关于他们的语言,他们的习俗，他们的律法，他们的宗教的细节，据说，都与融入了后青铜时期的特征。
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Time to time, yeah.
时常是这样的。
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So before we leave it, I've been making a point in this class of coming back to reality from time to time, so this is a very simple model of the soccer game in reality.
在我们结束讨论之前,我来强调一下,我们应该回到现实中,这是一个很简单的足球模型
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And "it" definitely just refers to time and you only use "it" when you're talking about time.
这时，“it” 一词仅指时间，当你在谈论时间的时候，只能使用 “it”。
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Yeah, it's kind of a color that you throw in from time to time for special effect.
对,它就如同制作视觉特效时,添加的色彩
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We can start taking derivatives of this with respect to time.
我们首先来对时间求微分
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And runners proved the doctors and scientists-- proved that they were right and ran the mile in two seconds and 4 minutes, one second, but no runner could run the mile in under 4 minutes, ever since the mile was actually timed-- when they started to time runs.
跑手们证明了医生和科学家…,证明了他们是对的,一英里跑四分钟两秒，四分钟一秒，但没有跑手能少于四分钟，从一英里跑计时以来-,当人们开始计时跑时。
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I'll leave the example on the handout, it shows you another version that we'll come back to next time.
我把那个例子放在课堂手册上了，它是问题的另一个版本,我们下一节课也会来讲。
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