So, if we're trying to figure out the wavelength of a Matsuzaka fastball, we need to consider the velocity first, which is 42 miles per hour.
如果我们尝试计算一个,松阪发出快球的波长,我们首先需要考虑速度,每小时为42英里。
We don't usually do our chemistry calculations in miles per hour, so let's switch that to 42 meters per second, so it's -- sorry, it's 94 miles per hour.
在化学计算中我们很少,用英里每小时,所以我们把它换算为42米每秒,对不起,它是94英里每小时。
Mike actually holds the world record for downhill speed skiing for blind person, which is 60 miles an hour.
实际上,迈克是盲人高山滑雪的记录保持者,速度达到了每小时60英里。
Things that I say are going at 50 miles per hour you may say are going at 80.
在我看来速度为每小时 50 英里的物体,在你看来速度可能是每小时 80 英里
It fit the environment perfectly, once they could make these things actually go twenty-five miles an hour.
它与北美的环境及其契合,人们铺路速度一度可以,达到每小时25英里
For example, if a car is going on a racetrack and you're seeing it from the top, if the speedometer says 60 miles per hour, you might say it's not accelerating.
例如,如果一辆车在跑道上行驶,你从上面俯视它,如果速率表显示的是60英里每小时,你也许会说它没有在加速
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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