航天飞机重返地球大气层时因有摩擦力而减慢速度。
The force of friction slows the spacecraft down as it re-enters the earth's atmosphere.
从1945年到1965年，美国的经济生产力以每年3%的速度增长，而自1970年代初以来，它的年增长率仅为1%左右。
Whereas United States economic productivity grew at an annual rate of 3 percent from 1945 to 1965, it has grown at an annual rate of only about 1 percent since the early 1970s.
参与者在高强度跑步后学习的速度快了20%，一周后再次测试时，他们表现出了更好的记忆力。
Participants were able to learn 20 percent faster after the intense running and they showed a superior memory when tested again a week later.
他们认为岛上的人口增长迅速，然后保持或多或少的稳定速度来增长，直到欧洲人的到来引进了岛上居民对其没有免疫力的致命疾病。
They think its population grew rapidly and then remained more or less stable until the arrival of the Europeans, who introduced deadly diseases to which islanders had no immunity.
随着时间的推移，卫星失去了推进速度，使得地球对卫星的拉力大于把卫星推离地球的力。
As time goes by, the satellite loses its speed, which makes the force pulling it towards the earth stronger than the force pulling it away.
但现在我要产生的，功率是力和速度，间的标量积。
But now the power that I have to generate is the dot product between the force and the velocity.
关于力和加速度，我们可以写出以下公式(现在我们只要看纵轴方向就可以了)。
In terms of forces and acceleration, I can write (now just in the y-direction).
那么，如果速度有缺陷，衡量生产力的最佳度量方式是什么？
So, if velocity is flawed, what is the best measure of productivity?
这样看来，速度并不能总是反应团队的真实生产力。
Thus velocity does not always reflect the true productivity of the team.
这是一个问题因素，因为生产速度常常与良好的判断力相冲突。
This one can cause trouble, because speed is often in conflict with good sense.
报告说：“吸烟相关的医药支出和生产力损失每年都在以更快的速度增加。
Tobacco-related medical expenditures and loss of productivity are increasing by the year at an expanding rate.
它着重于这些变化的影响力，活力和速度。
It focuses on the forces, the dynamism or speed of these changes.
按照当前两国的相对增长速度，以购买力平价计算，到2014年，中国经济的绝对规模将超过美国，成为世界第一大国。
By 2014, at current rates of relative growth, China's economy will pass the US, in absolute size, to be the biggest in the world, at PPP.
用第三人称写(“含水层涵盖1000平方公里”)，或第一人称复数(“从这个等式我们看到，加速度与力成正比”)。
Write in the third person (" the aquifer covers 1000 square kilometers ") or the first person plural (" We see from this equation that acceleration is proportional to force ").
当你很累的时候，你就无法集中注意力或是以最快的速度完成工作(如果你还可以工作的话)。
When you get burned out you end up unable to focus or complete work as quickly as you might otherwise (if you can work at all).
工资仍然以约两倍于欧元区平均水平并夸张地高于生产力增长的速度在抬高。
Wages are still rising at a rate roughly twice the euro zone's average and well ahead of productivity growth.
首先，海明威的小说是不易阅读的，而测试阅读速度和理解力时材料的主题是最重要的。
First, Hemingway is not an easy read, and subject matter is all-important when measuring speed and comprehension.
一般来说，能够利用有技能但成本较低的人力资源、有经验的外包人员，及重叠时区来获得竞争力——增加速度和减少成本。
In general, the ability to gain a competitive edge — to increase speed and decrease costs — by leveraging skilled but lower-cost resources, experienced outsourcers, and overlapping time zones.
这时较轻的物体会对较重的物体产生一个拽力，使得重物的下落速度变慢。
This would allow the lighter object to create drag and slow the heavy one down.
数独(一种数字游戏)，猜字和电子游戏都能促进你的思考速度和记忆力。
Suduko, crosswords and electronic games can all improve your brain's speed and memory.
间接损失包含人的生产力的损失以及家畜的生长速度、繁殖能力和产奶量的下降。
Indirect costs comprised human productivity losses and the reduction in growth, fecundity and milk production in livestock.
但通常来说，正常的睡眠、食欲、能量以及注意力会以更快的速度恢复。
But typically sleep, appetite, energy, concentration come back to normal more quickly than that.
受到生产力增长速度急剧下降和石油危机的共同影响，加拿大经历了一段金融困难时期。
Canada has undergone financial difficulties from the combined impact of a rapid slowdown in productivity growth and the oil crisis.
并且，这些受赡养者对国家的收入只减不增，他们同样抑制消费，因此资本聚集和生产力增长的速度就放缓了。
And because these dependants make a claim on a country's income without adding to it, they also depress savings, thereby slowing the accumulation of capital and the growth of productivity.
这种书一般通过提供提供速度及理解力测试、阅读技巧等，来帮助人们提高阅读能力。
Such a book usually provides speed and comprehension tests as well as techniques to improve reading.
这个类似于，力除以质量等于加速度，就是速度对t的导数。
That is the analog of force divided by mass equals acceleration, which is d over dt of velocity.
这个类似于，力除以质量等于加速度，就是速度对t的导数。
That is the analog of force divided by mass equals acceleration, which is d over dt of velocity.
应用推荐