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We can never just have it there before us or, as I say, if we can--if we can--it's a very, very difficult act of concentration.
我们永远不能只面对着它，或者，要我来说，如果我们可以的话，那将需要高度集中注意力，这是很难的。
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And once you... when you're having that bad of a season, it's really hard to get everyone passionate about it,
所以一旦赛季取得很差的成绩，就很难保持球队的激情，
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Why is it difficult in some cases to produce a vaccine when we've been successful in so many others?
为什么某些疾病的疫苗很难研制,即使我们已经成功生产了很多种疫苗
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Even if the thing that you really want is an integral that would be difficult to evaluate.
即使需要计算的,是一个很难的积分。
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So there's a lot of power in this, both engagement and both allowing students to get conceptual understandings of things that are very hard to understand and they're abstract.
所以这是很强大的，不论是参与性,还是使学生能更好,理解那些,很难的概念,很抽象的概念。
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The relationship between Moses and God is a very intimate one, very much like a husband and wife, who are working together a s partners and parenting a difficult child.
上帝和摩西的关系是非常亲近的，就像丈夫和妻子,一起合作照看一个很难满足的小孩。
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Part of the problem with using operant conditioning with babies is it's difficult to get them to behave in any systematic way.
应用操作性条件作用的部分问题在于,很难使婴儿们按照系统的方式行动
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That's a lot harder of a problem to solve if you need to reconstruct the fragmentation, yeah.
如果你需要重构这些碎片,会有很多很难的问题等着我们。
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Tim Wakefield Tim Wakefield on the DL right now throws a lot slower, because he has that tricky knuckle ball, he doesn't need to throw as fast.
现在受伤停赛的,投的很慢，因为他有一个很难处理的指节球，他不需要扔的很快。
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Many values that I had a hard time accepting I came to terms with.
那些我曾经很难接受的价值观,我渐渐地学会接受它们。
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And it's just very hard to change something that hasn't changed very much.
但是不经常改变的事物,想要改变是很难的。
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When you buy high and sell low it's really hard to generate returns, even if you do it with great enthusiasm and great volume.
当你高价买入低价卖出时,是很难产生回报的,不管你有多大交易热情或有多大交易量
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Modern poetry is difficult and these are difficult lines.
现代诗是很难读的，这些诗句也非常难以理解。
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So it's quite difficult in the real world for candidates to position themselves.
所以在现实生活中候选人,选择位置是很难的
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We respnded aggressively, very aggressively on a lot of different occasions, and it was the kind of crisis that is just hard to keep control of. Ultimately we did.
我们的应对措施很强势，非常强势,在很多情况下都是如此，这次危机是,很难控制的，但最终我们做到了。
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Generally, you wouldn't find these kinds of paintings in other places.
一般来说,你在别的地方很难看到这样的画作
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So that's a shot fired across the bow against the author because it's Barthes' supposition that the author isn't maybe even quite an author function because that function may be hard to identify in a discrete way among myriad other functions.
因而这是对作者的警告,因为巴特推测,作者可能甚至都不是功能性的,因为这种功能可能很难通过分离的方式,在很多其他功能中被辨认出来。
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Of course,that's a big if.
当然这个，如果，是很难实现的。
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Most of the luck is bad; it's hard to succeed, and with some combination of luck, skill, determination and hard work all of that will decide which of these farmers will be successful and which will not.
靠投机取巧是很难成功的,只有包含着运气,能力,意志和勤奋的所有因素才能角逐出,哪些农民会获取成功,哪些会遭受失败
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The answer is I can't. OK, in the simple case of integers I can, but in the case of something more complex like faces or fingerprints or passwords for that matter, it's hard to design a hash function that has completely even distribution, meaning that it takes any input into exactly one output spot.
答案是我不能，好吧,在简单的整数的例子中,我可以做到，但是在一些更复杂的场景中,比如面部，指纹，密码相关的问题中，很难设计一个哈希函数具备完全平均的分配,也就是说，做到对任一输入，可以准确地得到相应的唯一输出,因此在一个哈希问题中。
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When you go into a restaurant now, unless you want to go look at a board on the wall or get a pamphlet that may be hard to find, or go to the website, it's going to be pretty hard to know what you're eating in those foods.
现在当我们去餐馆吃饭时,除非看一看墙上的菜单板,或者是去翻往往很难找到的宣传册,再或者去网站查看,否则很难知道,我们在进餐时到底摄入了些什么成分
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So I just sit in there and work on, work on the sounds that are hard for my English tongue to produce.
有一些和英语发音不同的地方让我感到很难，我会长时间地练习这些发音。
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Another illustration of the difficulty of translating all values, in this case, a certain idea of virtue, into utilitarian terms.
这个例子再次说明,很难把所有的价值，此处特指某种德行，转换为功利主义形式。
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I'm not going to have you work long hours on difficult problems to be submitted and then graded.
我的作业不会让你们花费大量的时间,去钻研很难的问题，然后交上来让我打分。
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Other languages don't have that distinction and so those distinctions are very difficult for non-native English speakers to learn.
其他语言并没有这样的差别,所以非英语母语的说话者,很难发现这些差别
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It's a very complicated situation because the kind of economic risks that we face are difficult for most people to understand.
一个很复杂的情况是,我们所面临的经济风险,很难被大众完全理解。
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To use an ancient expression from the 1970's, which only John and I will appreciate, it's really hard to grok what that code is doing, to understand what it's trying to make happen.
我和约翰都会同意，70年代的一句话来概括，那就是很难理解编码的内容，以及它想要完成的工作。
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It's very difficult even to keep in mind the conceptual difference between these two sorts of supplement.
要记住,这两种补充的不同是很难的。
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Okay, so you guys have identified some of the key issues that make dietary assessment so difficult.
好的,大家指出了一些使饮食评估,变得很难的关键因素
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This is necessary, it's hard to find holes in a Nobel Prize worthy idea.
这是很必要的，在一个获得诺贝尔的想法中,很难发现漏洞。
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