They put a weather satellite into orbit about the earth.
他们把一颗气象卫星送入环绕地球的轨道。
Planetary perturbations make the earth's orbit about the sun irregular.
行星的摄动使得地球绕太阳的轨道是不规则的。
About every two years, however, the Earth passes Mars as they orbit around the Sun.
大约每隔两年，地球会在绕太阳运行的轨道上经过火星。
What about other big things still in orbit?
如果还有些大东西还在轨道上运行呢？
Q: What about other big things still in orbit?
问：如果还有些大东西还在轨道上运行呢？
The velocity of the Earth in orbit is about 30 kilometers per second.
地球在轨道里的速度，约为30千米每秒。
In orbit around the Moon, the orbiter was about 372,335 kilometers from Earth.
环绕月球时，卫星距离地球约372,335公里。
The orbit eventually will be circularized at about 31 miles above the moon.
轨道最终将发送在大约31英里的高空月球。
Seven-measure-picture of the ancient China is about the sun's moving orbit.
中国古代的七衡图就是太阳运行的轨道。
Seven-measure-picture of the ancient China is about the sun's moving orbit.
中国古代的七衡图就是太阳运行的轨道。
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