The researchers asked them if they napped and for how long.
研究人员询问他们是否午睡以及午睡多长时间。
You're not done yet: You have to tell CakePHP exactly what you want cached and for how long.
仅仅启用缓存还不够，还必须准确地告诉CakePHP需要缓存的内容以及缓存多久。
Proactively decide how many times a year you are willing to see this person and for how long.
采取主动，确定一年中与此难以相处的人见面的次数、时间。
Since templates are dynamic, it is important to be careful what you are caching and for how long.
一旦模板是动态〔应该不难理解〕的，哪些文档你加了缓存，缓存时间多长都是很重要的。
The impact of a crisis would therefore depend on how much oil production was lost and for how long.
因此，石油危机的影响力大小取决于石油生产的减少量以及减产的时间长短。
Make it clear how, when, where, and for how long people can expect to interact one-on-one with you.
写清楚怎样，什么时候，在哪儿，人们多久能期待与你一对一接触。
But depending on what you throw on the grill - and for how long - you may be jeopardizing your health.
但是根据你烤架上烤什么食物——以及烤多长时间——你可能正在损害自己的健康。
It's not a question of when they start raising interest rates but how quickly they do — and for how long.
问题不在于他们是否加息，而在于加息的动作有多么快——以及加息能够持续多久。
No one has ever searched my baggage, or asked anything more than where I planned to stay and for how long.
没有任何人来查我的行李，除了有人来问我打算住在哪里、住多久之外，就再没有人来问我什么了。
I also think it will come down to being mindful and deliberate with where I spend my time and for how long.
我也认为，归结起来，自己应该在怎么使用时间、使用多久方面深思熟虑。
I spent the next several days looking the calendar, trying to see when I could take a vacation and for how long.
接下来的几天，我一直在看日历，试图找出我可以休假多长时间。
A first step is to decide which data should be kept and for how long; many firms store too much, making leaks more likely.
第一步是确定那些信息需要保护且保密期为多长。
Cells respond to this protein by growing differently depending on how much of it they're exposed to, and for how long.
细胞根据这种蛋白质的数量和作用时间长短进行分化。
Small cameras can now be embedded in the screen or hidden around it, tracking who looks at the screen and for how long.
微型摄像头现在能够被嵌入到大屏幕中或者隐藏在大屏幕的周围，追踪着那些看广告的人以及他们在广告前停留了多长时间。
When the rovers wake up, they receive a day's worth of commands telling them what direction to drive in and for how long.
漫游车重新工作时，他们会收到一天的工作指令，包括前进方向和工作时间。
As The Economist went to press, it still was not clear on what terms America's debt limit would be raised, and for how long.
当经济学人出版时，美国债务界限将升到什么水平，持续多长依然不明朗。
The PC is fast replacing the TV set as an entertainment hub, and emotions run high over who gets to log on and for how long.
个人电脑正在迅速取代作为娱乐中心的电视机，一谈起谁登录互联网，以及上网多长时间，人们就激动不已。
Other questions to be answered, he says, are figuring out the best dose of strawberries and for how long they should be eaten.
另外的问题也亟待解决，他说，需要估算出食用草莓的最佳剂量和疗程。
The acceptable level of unplanned unavailability (e.g. how often can outages be tolerated for which applications, and for how long).
规划的可用性的可接受级别(例如应用程序可以允许的中断频率以及中断多长时间)。
When a piece of news breaks online, it's hard to predict how widely it will be discussed in blog posts or tweets and for how long.
当一条新闻在网上发布时，我们很难预测它会在多广的范围内被博客和微博所关注，也不知道这样的关注会持续多久。
He's now resting at the Coachella Valley Animal Campus in Thousand Palms, but how he got stuck and for how long remains a mystery.
它现在在千棕榈的冦切拉(Coachella)山谷动物营地休养，但它到底是怎么卡到那里的仍是个谜。
Administered by the Securities and Exchange Commission (SEC), the act defines what company records must be stored and for how long.
由美国证券交易委员会执行的这一法案规定了必须存放的公司记录的种类以及存放期限。
Soon enough, screens will follow our eyes to perceive where we gaze. A screen will know what we are paying attention to and for how long.
不久的将来，屏幕将可识别人的眼神，进而理解我们在看什么，一块屏幕将能知道我们的注意力集中在哪里以及持续多长时间。
Mr Jobs' thin frame and gaunt appearance sparked questions about his health and for how long would he continue to be at the helm of Apple.
Jobs瘦弱了身躯和憔悴的面容引发了关于他健康的疑问，大家都在揣测他还会掌舵苹果多少日子。
As she's getting older, it's getting better. especially if I can explain ahead of time to her who I'll be talking to, why and for how long.
随着她一天天长大，这种情况也有了很大改观，特别是当我事先告诉她，我要和谁交谈，为什么要谈以及谈多久的时候。
Even if managers know that a new product will follow this cycle, they cannot be sure when each phase will start and for how long it will last.
即使管理者们知道一个新产品要经历这个周期，他们也无法确定各个阶段将会于何时开始，以及将要持续多长时间。
Even if managers know that a new product will follow this cycle, they cannot be sure when each phase will start and for how long it will last.
即使管理者们知道一个新产品要经历这个周期，他们也无法确定各个阶段将会于何时开始，以及将要持续多长时间。
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