Between 1981 and 1997, detailed time-use studies showed that the time children spent at play declined by 25 percent.
从1981年到1997年，详尽的时间使用研究表明，孩子们花在玩耍上的时间减少了25%。
This indicates that WPAR resource control is at play.
这说明WPAR资源控制起作用了。
It smashed on the ground below, narrowly missing some children at play.
这个花盆在地上砸得粉碎，差点就砸中了在旁边玩的小孩。
And while this is true I believe that there is another more powerful tenet at play.
尽管此言不虚，但我觉得这背后还有另外一个更强大的原则。
De Martino says in addition to age, other factors such as income and education are also at play.
Martino认为，除了年龄的增长，收入和教育程度等其他因素也会起作用。
Acquisitions abroad have hit some companies' returns, for example. But deeper trends are at play, too.
海外收购使一些公司的回报率受到影响，但是深层次趋势亦起了作用。
There are too many variables at play for there to be a universally ideal day to buy an airline ticket.
机票价格波动的原因太多，没有哪天一定是买票的最佳日子。
Unlike the flavor of a perfectly aged pinot, Reclari says, the factors at play aren't overly complicated.
“不像陈年的比诺（一种法国葡萄酒），”莱克拉里说，“影响的因素并不是非常地复杂。”
These aren't randomized controlled trials, and there could be other factors at play that we aren't measuring.
这些研究不是随机对照试验，也可能有其他我们并未予以衡量的因素在发挥作用。
Chris Peterson, a happiness researcher at the University of Michigan, suspects there are other factors at play as well.
密歇根大学的快乐问题研究专家克里斯·彼得斯猜想应该还有其他要素在起作用。
However, it's still unclear if tobacco fumes actually take a toll on children's brains, or if something else is at play.
然而，香烟烟雾是否确实对儿童的大脑产生负面影响，或者是否是其他东西所起的作用，尚不明确。
Yields have since retraced that drop in Britain and bounced higher than before in America. But lots of factors are at play.
不过英国公债的收益率如今已经恢复至下降前水平，美国公债的收益率甚至已反弹至数个月的高点。
This is helpful when multiple versions of the JVM might be at play or when third-party classes need to be managed with looser coupling.
这对于可能使用多个版本的JVM或者需要用松散耦合管理第三方类的情况会有帮助。
The answer is crucial to understanding the processes at play in low-mass stars and giant planets and the differences between them.
这个答案对于理解低质量恒星和巨行星的形成过程，以及它们之间的差异，至为关键。
Allowing your mind to be at play is perhaps the most effective way to stimulate creative thinking, and yet many people disassociate play from work.
让思想处于“玩”的状态，这是激发创造性思维最有效的方法。但是，很多人把玩跟工作分开。
Within thick and boundless forests wild elephants and wild oxen ramble about, with peacocks in their pride, gibbons at play, and hornbills whispering.
在浓密的没有边际的森林里，野象和野牛惬意地漫步，孔雀舒展着美丽的羽毛，长臂猿穿行其中，犀鸟轻轻耳语。
The scientists checked the data for all possible natural influences such as the lunar cycle as well as random variations and found neither to be at play.
科学家们检查了所有可能造成这种变化的自然因素，例如月亮运行周期和随机的变化，结果发现二者都不起作用。
Several factors are at play, including maturity, diminished responsibilities and the ability to focus on the things that matter rather than chase elusive goals.
这其中有许多因素在起作用，包括不断的成熟，逐渐减少的责任，以及一种与日俱增的能力，即关注重要的事情，而不是追逐模糊不清的目标。
Even cats at play will display the feline primal instincts of creeping about in the shadows and, without a whisper of warning, pouncing on their target prey.
猫科动物在捕猎时会匍匐行走在暗影中，悄无声息地突袭目标猎物。家猫在玩耍中也会显现出捕猎的本性。
Our beliefs about ourselves and about our own capabilities as well as how we see the world and the forces at play in it all affect what we will find possible.
我们关于自己和自身能力的信念，以及关于世界以及各种力量的信念，都影响我们将发现什么是可能的。
In 2005, director George Lucas said he aimed to start rereleasing the 'Star Wars' movies in 3-D in 2007; the delay underscores some of the complexities at play.
2005年，导演卢卡斯(George Lucas)说，他希望2007年开始重新发行3D版《星球大战》；但后来的推迟显示出了其中的复杂性。
"Bullying" and "harassment" are amorphous categories, and the seriousness we attach to these tactics varies considerably depending on the power dynamics at play.
霸凌和骚扰是两个没有明确界线的类别，我们对这些策略的重视度，在相当程度上取决于当时的权力动态。
"Bullying" and "harassment" are amorphous categories, and the seriousness we attach to these tactics varies considerably depending on the power dynamics at play.
霸凌和骚扰是两个没有明确界线的类别，我们对这些策略的重视度，在相当程度上取决于当时的权力动态。
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