How long do teenagers need to sleep?
青少年需要睡多久？
How long did his mother need to stay in bed?
他妈妈需要在床上躺多久？
Talk to yourself. Remind yourself of how you handled similar situations in the past, your strengths, and how long you will need to get through it.
提醒自己以前遇到类似的情况时是怎样处理的，以及需要多长时间来度过这一时期。
We need to understand who is getting my location information, what are they doing with it, how long are they keeping it.
我们需要知道，谁在获取我的位置信息？他们利用这些位置信息干什么？
Nutritionists have long disputed the merits of the pyramid (do we really need all those carbs?), but there's no denying the impact it's had on our national awareness of how to eat healthy.
尽管营养学家们长久以来一直在争论那副膳食金字塔的价值（我们真的需要所有的这些碳水化合物吗？） ，但是没有人否认太对唤醒国民对饮食健康的重视。
To do so we need to talk about where to store the waste, but we have not been able to answer the question residents are asking: how long it was going to stay there?
我们不知如何回答这个问题。为了回答这个问题，我们现在最需要讨论的是我们在哪里存放这些废弃物。
Take your filaments to your bulb and hold them up to see how long the stems need to be to have the heart filaments positioned in roughly the center of the bulb.
把爱心放进灯泡里，大致在灯泡中间的位置，比一下大概需要多长。
You need to consider factors such as model sizes and the number of modeling users. These factors will determine how long it will take to complete these tasks.
您需要考虑许多因素，例如模型大小和模型用户的数量。
But, basically you don't really need to remember these formulas as long as you remember how to express r in terms of rho sine phi, and x equals r cos theta.
事实上你不用记住这些公式,只需要知道r=ρ*sinφ,而x=r*cosθ
This becomes a long a painful process because you need to find all the applications that use this database and figure out how to reconfigure them to use the new server when the cutover happens.
这会是一个漫长而痛苦的过程，因为你需要找出所有使用这台服务器的应用程序，并且明确当开始切换的时候，要如何重新对它们进行配置以使用新的服务器。
Practical issues need to be sorted out too: how and where should data be stored for the long term, who will control access, and who will pay for those services?
还需要理顺实践问题：数据应该怎样以及在何处长期存储，由谁控制访问权限以及谁将购买这些服务？
How ever short or long your application form maybe, users need to know their path ahead.
不过你的表单是短是长，用户总是需要知道接下来要怎么走。
The product doesn't need to be great; it just has to basically work. And, the market doesn't care how good the team is, as long as the team can produce that viable product.
这个产品并不需要很强大，只需要有基本的功能即可，另外市场也不需要有多么优秀的团队，只要这个团队可以开发出符合要求的产品就可以。
In many cases, when they say a calculation needs to be faster, what they really mean is that they need to know more quickly and reliably how long the calculation will take.
在许多情况下，当他们指出计算需要更快一点时，他们真正的意思是他们需要更快更可靠地知道该计算将要进行多久。
This means you need to understand how long you will be using your test scripts to fully understand the costs of implementing modularity.
这意味着您需要知道您要使用您的测试脚本多长时间，以完全了解实现模块化的成本。
If you need to wait on a blocking action — say, the results from a remote database query — it is not clear exactly how long you will need to wait for results to be available.
如果您需要等待一个阻塞操作—比如，对于来自远程数据库查询的结果—您不会确切地知道在可以使用结果之前究竟要等待多长时间。
To figure how long long a family would need to save, you must make some assumptions. Here's how the CRL calculates 14 years.
为了计算一个家庭能够积攒多少钱，需要作出一些假设，以下是贷款中心有关14年计算的假设。
Parents need to be aware of the games their children are playing and how long they're playing, and make sure the games are appropriate for their ages and personalities, he said.
他认为，家长们应该关注孩子们所玩的游戏以及他们所花在游戏上的时间，确保那些游戏适合他们的年纪，符合他们的个性。
Gender may need to be considered when deciding how long patients should be treated with blood thinners.
在决定病人应当使用多久的血液稀释剂时，可能需要考虑一下病人的性别。
You can see this need for confidence in their eyes when they ask you how long it will take you to finish task X.
当他们问你什么时候可以完成任务X的时候，从他们的眼中，你可以看到那种期待你自信回答的目光。
Second, to know when refactoring starts to win we need to know some numbers: how long will refactoring take, and what will be its impact on velocity?
其次，为了弄清楚重构（增加的特性价值）在什么时候能超过（不做重构时的特性价值），我们需要一些数字：重构会花多长时间，它会如何影响开发速度？
The day before training camp began, Yao downplayed how long he would need to regain his form.
就在训练营开始的前一天，姚明对他需要多长时间来恢复状态轻松应对。
There is no pre-defined schedule; you need to find the "project rhythm" that suits you best, based on how long the build takes, how often developers can deliver, and so on.
没有预定义的进度表；你需要找到最适合你的“项目节奏”，这是基于你的构建要花费多长时间，开发人员多久提交一次，等等。
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。
Additionally, if you need to control exactly how long an animation takes, you can also pass in the number of milliseconds as the argument.
此外，如果需要精确控制动画时间，那就需要用参数指定毫秒数。
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。
We have to decide on how long a life of the reactor core we want and by lifetime we mean the time from when we start the reactor to the time that we need to re-fuel.
我们需要决定反应堆核心的一期有多长，寿命，我们指的是，我们开始反应堆的时间到，我们需要换料的时间之间。
To ensure you and your friend are on the same page you need to create a paper trail that explains what you're borrowing, for how long and how you will pay it back.
为了确保你和你的朋友达成共识，必须作出书面记录说清楚你借的是什么，要借多久和如何归还。
To ensure you and your friend are on the same page you need to create a paper trail that explains what you're borrowing, for how long and how you will pay it back.
为了确保你和你的朋友达成共识，必须作出书面记录说清楚你借的是什么，要借多久和如何归还。
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