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The driver tried for a speed of about eight kilometers an hour.
VOA: special.2010.04.26
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For example, if we're talking about a pitcher, like Matsuzaka, we might want to know the speed of his average fastball.
举例来说，如果我们谈到一个投手，就像松阪，我们想知道他投出,快球的平均速度。
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OK. Now. This is just sort of bringing us back up to speed and adding a few more details in.
好，现在，我们刚刚回头,过去看了一些,细节问题。
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"If you have a fault that is being strained at a speed of 7 mm per year, which is the case here,"
VOA: standard.2010.01.13
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And so when you actually have a device the bits don't flow at the speed of light in reality.
因此，当你拥有一个设备,数据位并不能以现实中的光速传输。
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At the time of Endeavour's launch, NASA says the International Space Station was traveling at a speed of about eight kilometers-per-second, above western Romania.
VOA: standard.2010.02.08
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Gallium arsenide switches ten times faster than silicon All of a sudden,I've got a clock speed ten times faster with no change in design.
砷化镓启动的速度是硅的10倍,突然，我得到了10倍快的时钟速度,但是设计没有发生任何改变。
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A high-speed French train can reach 574 kilometers per hour, but the record was set a Japanese train with a speed of 581 kilometers per hour.
VOA: standard.2010.02.15
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One way is to say, if I do a full revolution, I think of the speed as a distance over time.
一种方法是,如果我转完整的一圈,我认为速度就是距离除以时间
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The findings suggest that even a half-hour walk at a quick speed every day could lower the risk of cognitive impairment.
VOA: special.2011.07.27
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So that way you can have an idea if, oh, I do really understand this but I'm a little bit slow, maybe I need to practice this one type of problem a little bit longer so I can get up to speed so I'm going to be able to get through all this in terms of the exam time.
这样你就可以知道，假设，噢，我真的懂这个，但是我的速度有点慢，或许我需要在练习这个类型的题目上,多花一点时间,这样我就可以提高自己的速度,可以全部做完,在考试规定的时间内。
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But to a new generation of high-speed communicators, a tweet describes a message sent through a popular new service.
VOA: special.2009.02.06
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This is very important,which is why I am doing it: "If we want to know how fast a human being can run, then it is no use to average out the speed of a "good sample" of the population; it is far better to collect Olympic gold medal winners and see how well they can do.
这话非常重要，是我作这个研究的原因：,“如果想知道人类最快能跑多快，那从好的样本中测出平均数是“,没用的;,而应该收集田径类奥运冠军的信息,看他们能跑多快。
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He says a new system is needed to meet the speed and complexity of a twenty-first century global economy.
VOA: special.2009.06.19
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% So 1% the speed of light. I would say that is relatively fast. That is a pun.
所以说是光速的,相对来说有点快，这是一个双关语。
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Toyota has recalled more than eight million vehicles worldwide over a risk of gaining speed suddenly and uncontrollably.
VOA: special.2010.02.26
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Even though a hard drive spins at 7200 times per minute or even faster, that's relatively slower than the speed of light.
即使一个硬盘驱动器的转速达到每分钟7200次,甚至更快，仍然比光速慢。
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It enables the user to control the speed and sound levels of orchestral music playing on a computer.
VOA: special.2011.05.11
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You put a chunk of wood on a table and you try to move it at constant speed.
你把一大块木头放在桌子上,试着让它匀速运动
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But blood drops with long tails can tell a great deal about the direction, speed and angle of the blood's starting point.
VOA: special.2010.05.05
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If you're a doctor and you've got a patient who's running away from you at the speed of light, you'll know what to do.
如果你是个医生,你的一个病人以光速逃跑了,你就知道该怎么办了
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He developed a plan for measuring both the distance and speed of as many galaxies as possible.
VOA: special.2009.04.29
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Alright. So, since we have these terms defined, we know the frequency and the wavelength, it turns out we can also think about the speed of the wave, and specifically of a light wave, and speed and is just equal to the distance that's traveled divided by the time the elapsed.
好了，我们已经定义了，这些术语，我们知道了，频率和波长，现在可以来考虑,波的速度了，特别是光波的速度，速度等于它走过的距离,除以所用的时间，因为我们。
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A navigator would take the last known position of the ship, then add the ship's speed.
VOA: special.2009.12.23
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And this is a very fast speed, of course, it's about 700 million miles per hour. So, one way to put that in perspective is to think about how long it takes for a light beam to get from earth to the moon. Does anyone have any guesses? Eight seconds, that sounds good.
当然这是一个非常快的速度，它大约是每小时7亿英里,为了更形象化，我们,看看光从地球到月球,需要多少时间，你们猜猜是多少？,8秒，猜的不错。
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And Akio Toyoda promised a new level of openness and speed in dealing with safety issues.
VOA: special.2010.02.26
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It had a processor speed of one megahertz.
它的处理器是1MHZ的。
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Another popular form of exercise is jogging,or running at a slow to medium speed.
VOA: special.2010.06.08
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Remember, you've got to keep track of the sign of acceleration, so if you're picking up speed towards the ground, a is negative, so it will be g plus a, but a is a negative number.
记住,一定要注意加速度的符号,所以当你加速下降的时候,a 是负的,还是 g 加上 a,但是 a 是负数
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That is just under the wind-speed of a hurricane,a very severe ocean storm.
VOA: special.2010.10.19
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