It travels thousands of miles per second.
它一秒钟能走几千英里。
Wind soars as fast as 18 miles per second.
风速激增，达到每秒18英里。
Despite moving at 18 miles per second, it still takes the Earth a year to make it around the Sun.
不管地球的运行速度只有每秒钟18英里，它还是一年又一年地围绕着太阳运转。
A rocket must attain a speed of about five miles per second so that it may put a satellite in orbit.
火箭必须获得每秒大约五英里的速度以便把卫星送入轨道。
Light travels at about 300, 000 kilometers per second (186, 000 miles per second) — that's pretty fast.
光速大约为每秒300,000公里(即每秒186,000英里)——非常之快。
It travels at 186,000 miles per second and behaves as if it were both a solid particle and a wave of energy.
光速可达每秒钟186,000哩，而且光的传播不但是固体的粒子，又是一道能量。
The escape velocity needed by a spacecraft to overcome the tug of Earth’s gravity is around seven miles per second—ie, Mach 34.
宇宙飞船克服地球引力所需的逃逸速度约为每秒7英里（也即34马赫）；
Traveling at 17, 500 miles per hour (5 miles per second)…we orbit the Earth every 90 minutes, with a sunrise or sunset every 45 minutes.
以时速17500英里/小时（5英里/秒）飞行，每90分钟我们就绕地球飞行一圈，就是说每45分钟就日升或日落一次。
Claims that it's possible to push light beyond 186, 000 miles per second (300 million meters per second), are equally illusory, Galison said.
声称可能把光速增加到超过每秒186,000英里(每秒300,000千米)，同样也是虚幻的，盖利森说。
Claims that it's possible to push light beyond 186,000 miles per second (300 million meters per second), are equally illusory, Galison said.
声称可能把光速增加到超过每秒186,000英里(每秒300,000千米)，同样也是虚幻的，盖利森说。
At that speed, HM Cancri is the fastest binary star pair ever discovered, with each White Dwarf circling the other at a speed of 310 miles per second.
双星HMCancri是迄今为止所发现的运行最快的双星，它们是一对白矮星，其中一个围绕着另一个运转的速度是每秒310英里。
According to Einstein's 1905 special theory of relativity, nothing is meant to be able to go faster than the speed of light — 186, 282 miles per second.
根据爱因斯坦1905年发表的相对论，任何物体的速度都不可能超越光速，即186282英里/秒。
Einstein's theory of special relativity sets of the speed of light, 186,000 miles per second (300 million meters per second), as a cosmic speed limit.
爱因斯坦的狭义相对论把光速定位在每秒186,000英里（每秒300,000米），并把它作为宇宙的速度限制。
Another simple calculation shows that at light speed-186,000 miles per second (300,000 kilometers per second) -the beam reaches a target 200 miles away in. 001 second.
另外一简单计算表明，光速为每秒186,000英里(每秒30万公里)，光束到达200英里以外目标需要. 001秒时间。
If scientists were to detect a 600-foot-wide asteroid ten years in advance, Yeomans says, it could be deflected with a two-ton projectile traveling six miles per second.
约曼斯说，如果科学家能提前10年探测到一颗600英尺直径的小行星，就可以使用一颗两吨重，每秒速度6英里的弹道飞行器使其偏离轨道。
Special relativity is also based on a second assumption that gives the speed of light - 186, 000 miles per second (300 million meters per second) - in a vacuum a special status.
狭义相对论也奠基于它的第二个假设：他所设定的真空中光速为每秒186,000英里(每秒300,000千米)有它的特殊地位。
Special relativity is also based on a second assumption that gives the speed of light — 186,000 miles per second (300 million meters per second) — in a vacuum a special status.
狭义相对论也奠基于它的第二个假设：他所设定的真空中光速为每秒186，000英里（每秒300，000千米）有它的特殊地位。
NASA's Solar Dynamics Observatory said it saw a large coronal mass ejection (CME) associated with the flash blasting toward Earth at about 560 miles per second (900 kilometers per second).
美国国家航空和航天局的太阳力学天文观测台称，有一股强大的与耀斑引起的日冕物质抛射大约以每秒560英里（每秒900千米）的速度向地球袭来。
As a reasonable guess, they might, on an average, be 100 light years away. a light year is the distance which light travels at 186,000 miles per second in one year, namely 6 million million miles.
据合理推算，外星人离我们平均距离也有100光年之远(1光年是光以每秒186,000英里的速度在一年内走的距离即6万亿英里)。
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。
The speed of sound is - 340 meters per second-- - it depends a little bit on the temperature-- about 770 miles per hour.
声音的速度是,340米/秒-,它有些取决于，气温-,大概是770公里/小时。
The spacecraft passed the asteroid at a minimum distance of 3,160 kilometers (1,950 miles) and at a velocity of 15 kilometers (9 miles) per second, completing the flyby in just a minute.
探测器以每秒15公里(9英里)的速度通过小行星时，最近距其只有3160公里(1950英里)，而整个飞越仅耗时不到一分钟。
The spacecraft passed the asteroid at a minimum distance of 3, 160 kilometers (1, 950 miles) and at a velocity of 15 kilometers (9 miles) per second, completing the flyby in just a minute.
探测器以每秒15公里（9英里）的速度通过小行星时，最近距其只有3160公里（1950英里），而整个飞越仅耗时不到一分钟。
Instead of relying on sunlight, it would use the solar wind's plasma (which travels at 310 miles, or 500 kilometers, per second) as its means of propulsion.
与上述提到的设计不同之处在于，他们的设计不依赖利用太阳光，而是利用太阳风中的等离子流(每秒310英里/500公里)作为助推动力。
And the maximum speed that the person could use is at most ten miles per hour without killing him or herself which is about four meters per second.
人所能使出的最大，速度是10公里每小时，不出意外的话，大概是4米每秒。
425 miles per hour translates into about 189 meters per second.
425英里每小时转换成，189米每秒。
189 meters per second, and that is 425 miles per hour.
189米每秒，425英里每小时。
Mazda Motor Corp., Japan's second-largest car exporter, is developing a high-performance gasoline-engine car that achieves 32 kilometers (20 miles) per liter.
马自达公司作为日本第二大汽车出口商正在研发一种高性能的汽油动力车，其每升油耗可行驶32公里(合20英里)。
So I'm pedaling, and I keep my speed ten miles per hour, and I have to generate 15 joules per second on average.
我在保持速度踩踏板，时速10英里，我必须，平均产生每秒15焦耳。
When glass breaks, the cracks move faster than 3, 000 miles per hour. to photograph the event, a camera must shoot at a millionth of a second.
玻璃破碎时，裂痕的延伸速度超过每小时三千英里。要想拍摄下破碎时裂痕的延伸，摄相机要以百万分之一秒的速度拍摄。
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