What is the use of going to college if you don't know what you're going there for?
如果你不知道自己上大学的目的，上大学有什么用？
What use is a million dollars if there is no steel for you to purchase for the construction of your factory?
如果你根本就没有钢铁可以买来修建你的工厂，那么一百万美元还有什么用处？
There are also the opportunity costs: what cures for disease, what other useful discoveries might we never know of, because a habitat is destroyed forever, or land is polluted beyond all use?
还有所谓的机会成本：什么东西能够治愈疾病，还有其他有用的新发现，也许我们永远不会知道，因为栖息地被永远破坏，或土地被污染而没法使用。
In fact, it is a good practice to assume that there is a problem, and then use runtime analysis to pinpoint what it is.
事实上，一个好的习惯是假设应用程序存在问题，然后进行运行时分析以找到问题所在。
Since there are so many techniques with data mining, the major step to creating a good model is to determine what type of technique to use.
由于现在已经有很多数据挖掘技术，因此创建一个好的模型的最主要的步骤是决定要使用哪种技术。
The purpose of doing this is for the participants to recognise that there are different confidence levels in the room and for the facilitator to assess what format to use for subsequent discussions.
此举目的是让与会者认识到，房间里人们相互信任程度是不同的，让主持人评估在随后的讨论中采用何种形势。
They don't want their teams trying to figure out what pattern is best to use when there is a need to separate externalized information from its internal state.
他们不希望当有需求要分离外化的信息及其内部状态的时候，项目组尝试着去估计应用哪一种模式最好。
As there is not enough metal for everyday use, each nation issues currency and agrees to relate its currency to gold or to go on what is called a gold standard.
由于黄金无法满足日常使用的需要，因此每个国家都会发行货币，并将货币与黄金挂钩，或者采取所谓的金本位制。
And there is still time to upload your own historical object, with a description of what it says about the world at the time it was in use.
第二，你可以上传一个历史上的物品，附上一个描述，讲讲它是怎样诉说它所处的那个时代的。
There are many cliches people use to describe what makes a team a high-performance team: "There's no 'I' in team" and "the whole is greater than the sum of its parts," for example.
一个团队之所以成为一个高效能团队，人们有很多老套的描述方法，比如：“团队中没有自我”，“整体作用大于局部作用之和”。
Mr Lee said there are now people who do not bother logging onto news websites to find out what is going on in the world - they use microblogs instead.
李先生说如今有很多人不愿只为了解世界动向而登入新闻网站，人们反而愿意通过微博看新闻。
“What I’ve found from many interviews is that there were many executives who were reluctant to even use what I call the ‘i word, ’ to admit that they were engaged in imitation, ” he says.
他说：“在采访中发现，许多高管甚至不情愿用那些我称之为‘i 开头的单词’来承认他们是在模仿。”
So there is a convention for which letters to use for what sentence in the language.
这里有一个惯例，用来代表语言中句子的字母。
Then actually there are ways you can use basically differentials and constrained partials to figure out what the tangent vector to the curve is and so on.
然后，可以用微分关系,或受约束的偏微分来表示,曲线的切向量，就是这样了。
You can just use the version that I have up there as a template to see what is going on, but I am going to explain it more carefully again.
可以把黑板上的当做模板，看看该怎么做，稍后我会更加详细的，再介绍一下。
The house is on fire. Even if there is a water shortage, you must use what you have to put the fire out now.
房子起火了，即使缺水，你也必须尽你所有将火扑灭了。
Remember to use your brain. Just because something is there doesn't mean it's useful, for example, there is a camera, but what good could that possibly do?
请务必使用你的大脑。正因为事情是存在并不意味着它是有用的，例如，有一个摄像头，但可以说什么好处可能呢？
They will talk about--and they might not use the term "gap" but that's what I call it--what they're doing is saying, there is a gap between their culture and their world and ours.
他们会说…他们可能不会用“鸿沟“这个词“,我们才会用…他们的意思其实就是说，他们的文化和世界和我们的之间有鸿沟。
Even now there is still confusion about what Wolfram | Alpha is and what its main use cases will be.
即便是在现在还有人不理解Wolfram |Alpha是什么，主要有什么用途。
But what makes these solutions interesting is that there is no measurable performance impact from their use: They're designed to work in file server environments (CIFS or NFS).
但令这些解决方案受关注的是没有检测到任何性能受其影响(发生变化)：他们设计用于文件服务环境(CIFS or NFS)。
That's why there are no while loops or for loops in Haskell and instead we many times have to use recursion to declare what something is.
这便是haskell没有while或for循环的原因，我们的替代方案是使用递归。
What really counts is intuition. There is no use in intelligence on the road of exploration.
真正有价值的是直觉。在探索的道路上智力无甚用处。
There are any number of conventions about how to name unit tests, but our guidance is simply that you use names that make it clear what the test is checking.
如何命名单元测试有许多约定，但我们的指导是简单，你所采用的名字能清楚地表达它测试什么即可。
In programming, many times what is really needed is a small domain-specific language. There are many examples of domain-specific languages in use today.
在编程过程中，许多时候确实需要小型的领域特有语言。
Based on what we have done above, there is room for improvement in our simple contact management application, and it involves making use of some key features of WebSphere application Server.
基于上面我们已经完成的内容，我们可以改进示例联系人管理应用程序，它包含WebSphereApplicationServer一些关键特性的使用。
There are also good extensions that you can get for highlighting code syntax in perl or bash if that is what you use.
还有一些用来突出显示perl或bash 中的代码语法的扩展。
It shows small actions can make the biggest difference, but we must not be complacent as there is always more we can all do to reduce waste and recycle what we use.
这也显示了小小的举措却能带来巨大的改变，不过我们也不可骄傲自满，因为在减少浪费和回收利用方面，我们能做的还远远不止这些。
Finally, and perhaps most fundamentally, there will be the question in my country in others is: what is going to be the use of the fruits of prosperity?
最后，也许这也是最重要的一点，无论是美国、还是其他国家，可能都存在这个问题，那就是经济繁荣的成果对我们有什么用途？
Finally, and perhaps most fundamentally, there will be the question in my country in others is: what is going to be the use of the fruits of prosperity?
最后，也许这也是最重要的一点，无论是美国、还是其他国家，可能都存在这个问题，那就是经济繁荣的成果对我们有什么用途？
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