OVM (Orbiting Velocity Meter)
沿轨道运行速度测量器
the satellite would not circle the planet,
卫星就不会再沿轨道运行了，
Why do satellites stay in orbit?
为什么卫星会沿轨道运行呢？
The unmanned spacecraft docked automatically yesterday with an orbiting space station.
那个无人驾驶的宇宙飞行器昨天与一个沿轨道运行的航天站自动对接。
Perhaps Pluto is only the first of many similar objects orbiting in the darkness far beyond the sun.
也许冥王星只是在离太阳很远的一片黑暗中沿轨道运行的许多类似天体中的第一个，
A satellite stays in orbit,
卫星沿着轨道运行，
Mars, Venus and the other planets move in eccentric orbits.
火星、金星及其他行星沿不正圆的轨道运行。
The comets' offspring, the meteor swarms, travel in regular orbits, similar to the earth's orbit around the sun.
彗星的后裔，即流星团，沿正常的轨道运行，与地球绕太阳运行的轨道相似。
He was passing methodically in his orbit around the world, regardless of the lesser stars which gravitated around him.
他沿着自己的轨道环游地球，毫不忧虑那些在它周围运行的小行星。
The intersection plane of the earth's orbit with the celestial sphere, along which the sun appears to move as viewed from the earth.
黄道地球运行轨道与天球的交界面，在地球上看，太阳似乎沿着黄道运行
Not running on tracks or rails.
无轨的不在轨道或铁轨上运行的
Planets roll on their courses.
行星在轨道上运行。
Along the routes of certain tracks not a car was running.
有些电车轨道上，沿线没有车辆在行驶。
he plotted the orbit of the moon.
她画出了月球运行轨道。
orbit of artificial earth satellite
人造地球卫星运行轨道
The moon orbits the earth.
月球绕地球轨道运行。
The stars in their courses, ie the way they appear to move
在轨道中运行的星球
elliptic ascent
沿椭圆轨迹进入轨道