For example, many times you need to refactor code to improve performance; having the right statistics on hand to show how refactoring improves the user experience is important.
例如，您需要对代码进行几次重构才能改善其性能；掌握正确的数据，显示重构是如何改善用户体验，这也是很重要的。
How many client connection objects you need to create will depend on how many bridge queues are required.
需要创建多少个客户端连接对象，这取决于需要多少个网桥队列。
The instructions will tell you where to find the answers, what you need to do, what kind of answer is required, and how many words you need to write.
答题指导会告诉你在文章中哪里定位答案，你需要做什么，需要你填写哪种类型的答案，以及你填写答案的字数。
You will find in these case studies many examples of how we need to engage poor people in terms of having them as people who are rich in capacity and rich in desire to improve their lives.
你们会发现，在这些案例里有许多关于我们需要使贫困人口参与的例子，从他们具有能力，具有改善生活的愿望的角度出发。
However, no matter how many users are accessing your server, there are some edition-dependent minimums that you need to account for.
然而，不论有多少用户正在访问您的服务器，都会存在一些需要您考虑的取决于版本的最低要求。
To understand this behavior, you need to know how many SELECT statements were run and the number of times you had to read the next row in the table (rather than a direct access through an index).
要理解这种行为，需要知道运行了多少个select语句，以及需要读取表中的下一行数据的次数(而不是通过索引直接访问)。
Answer: I believe you are asking for limits as far as how many applications can run on a single machine and therefore, how many machines do you need in an environment.
答：我相信您是询问关于在单台机器上最多能够运行多少应用程序的限制，从而确定在一个环境中需要多少台机器。
Thus, this high water mark number is roughly how many agents you need simultaneously at peak when the concentrator is on.
因此，这个最高数字基本上就是在启用连接集中器时您同时需要的最大代理数。
I found many powerful lessons in this book, but one especially impressed me: you have only so much time, and you need to decide how best to spend it.
书中有许多包含有用的经验，其中一条我留下深刻的印象：你的时间有限，你必须决定如何利用有限的时间。
Use this Daily Caloric Expenditure calculator to determine how many calories you actually need each day.
使用每日热量消耗计算器决定你每天实际上需要多少热量。
How many tools or material things do you need to thrive?
为了使事业有成你需要多少工具及物质上的东西？
You also need the project manager's skills to assess how many development resources and skills are available to be able to allocate and prioritize requirements realizations to different iterations.
你还需要项目经理的技能来评估有多少开发资源和技能能够被获得，以对不同迭代进行资源分配和需求实现的优先级划分。
First determine how many stores you need to deploy either immediately or in the future, lay these out on an organization structure following the guidelines in store section.
首先确定您需要立即或在将来部署多少个商店，按照商店部分的指导原则将其布局在组织结构上。
First, use a calorie calculator to estimate how many calories you need to maintain your current weight.
首先，使用热量计算器来算一下我要维持当前体重每天需要多少热量。
You need to be aware of the total number of GDI resources in your application and how many of those resources are duplicates.
您需要清醒地了解应用程序所需要的总共的GDI资源数目，以及有多少资源是副本。
If you can easily access a lecture in quantum mechanics from the best lecturer on quantum mechanics, how many other quantum mechanics lectures do you need?
如果你能轻松地获取讲量子力学讲得最好的教师的讲义，你还需要多少其他的量子力学讲义？
Then, you need to learn how to read and write XML in PHP, which you can do in many ways.
然后，需要学习如何用PHP读取和编写XML，而有许多种方式可以做这件事。
This can tell you exactly how many calories you are consuming, as well as tell you if you need to cut back your calorie intake.
这样你就能准确的计算你摄入了多少卡路里并能提醒你应该减少你的卡路里摄入量了。
You’d be stunned if you knew just how many people are ready and willing to help you if only you’d clearly define your need and directly ask for help.
只要你清晰说明自己的需要，并直接请求帮助，你会吃惊地发现竟然会有那么多人时刻准备着愿意帮助你。
Table 3 shows how many questions are on each DB2 exam, how many you need to correctly answer to pass, and how long you have to take the exams.
表3显示了每门db2考试有多少道题，要通过考试需要答对多少道题，以及每门考试的时间。
What's the earliest age you can retire? How many years of service do you need?
最早可以什么时候退休？公司需要员工服务多少年？
You need to know how many miles are included in the lease and if there's additional money you need to pay up front or at the close of the lease.
你需要知道租约中包含的里程数，在租约开始以及到期的时候是否还有其它的费用。
You need to know how well many aspects of your customer portal are performing in real time.
您需要实时了解客户门户的许多方面的执行情况。
The fundamental questions you need to ask are how long will a developer spend writing a line of code and how many lines are going to be required for this project?
您要提出的基本问题是，开发人员编写一行代码需要多长时间以及此项目需要多少行代码。
And our question is, what we're going to be asking is, how many, if I give you the total pressure and the temperature here, what else do I need to know to find out all these molar fractions?
我们的问题是，如果我们被问到多少，如果给定总的压强和温度，我们还需要知道什么，才能知道混合的摩尔分数？
How many times have you found that you need to read the source code of your scripts every time you try to use them?
有几次发现每次使用您的脚本时需要阅读其源代码的情况？
Of course, there's no need to see things in such a quid pro quo way, but you can see how this example illustrates the way that helping others can come back to help you in many different ways.
当然，没必要用这种交换的方式来看问题。但从这个例子中我们可以看到，帮助别人能让你通过不同的方式得到回报。
You need to consider how much data you are likely to need and how many servers you would need to store the data.
您需要考虑可能需要的数据量和存储数据所需的服务器数量。
So you need to reach a balance when deciding exactly how many pieces of content you want to include in this initial subset that you manually classify.
所以在决定手动选择的初始子集包含的信息条数时，要有一种折中方法。
So you need to reach a balance when deciding exactly how many pieces of content you want to include in this initial subset that you manually classify.
所以在决定手动选择的初始子集包含的信息条数时，要有一种折中方法。
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