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- It travels thousands of miles per second. 它一秒钟能走几千英里。
- The velocity of light is about 186,000 miles per second. 光速大约是每秒十八万六千英里。
- It travels thousands of miles per second . 它一秒钟能走几千英里。
- The velocity of light is about 186,000 mile per second. 光速大约是每秒十八万六千英里。
- A light year is the distance which light travels at 186,000 miles per second in one year, namely 6 million million miles. 1光年是以每秒186000英里的速度走过一年的距离,约为6万亿英里。
- The comparable speed from the Moon is only 1. 5 miles per second. 而从月球出发的相应速度只是每秒1.;5英里。
- The comparable speed from the Moon is only 1.5 Miles per second. 而从月球出发的相应速度史是每秒1.;5英里。
- Yet molecules are always moving, some perhaps as fast as a mile per second. 分子仍然总在运动,其中有些分子的运动速度达每秒一英里。
- 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。
- Currently,the Milky Way is approaching the nearby Andromeda galaxy at a rate of 100 miles per second. 近来,银河系以每秒100英里的速度正在接近其附近的仙女座星系。
- We are not aware of the travel of light,because it moves at the incredible speed of about 186,000 miles per second. 我们觉察不到光的运行,因为光以秒钟186000英里这个令人难以置信的速度运行。
- A rocket must gain a speed of about five miles per second that it may put a satellite in orbit. 为了把卫星送入轨道,必须使火箭达到每秒约五英里的速度。
- It takes much less energy to accelerate to that 1.5 Miles per second than it does on Earth. 在月球上加速到每秒1.;5英里比在地球上所用能源要少得多。
- Currently, the Milky Way is approaching the nearby Andromeda galaxy at a rate of 100 miles per second. 近来,银河系以每秒100英里的速度正在接近其附近的仙女座星系。
- Comparable speed The comparable speed from the Moon is only 1.5 Miles per second. 而从月球出发的相应速度只是每秒1.;5英里。
- A light year is the distance which light travels at186,000 miles per second in one year, namely6 million million miles. 1光年是以每秒186000英里的速度走过一年的距离,约为6万亿英里。
- We are not aware of the travel of light, because it moves at the incredible speed of about 186,000 miles per second. 我们觉察不到光的运行,因为光以秒钟186000英里这个令人难以置信的速度运行。
- They burn so brightly because of tremendous friction when they hit our atmosphere at more than forty miles per second. 它们燃烧得如此明亮是因为它们以超过每秒四十英里的速度进入大气层,产生乐巨大的摩擦。
- The fireball ascended with great rapidity, the initial rate of rise being about a mile per second. 火球以很高的速度上升,上升的最初速度约为每秒1哩。
- A light year is the distance which light travels at 186,000 miles per second in one year,namely 6 million million miles. 1光年是以每秒186000英里的速度走过一年的距离,约为6万亿英里。