月亮绕地球运行。
同样，在外太空中，当您绕地球运行时，人们总是在这些空间站中四处漂浮。
Likewise, when in outer space, when you are orbiting the Earth, people are always floating around in these space stations.
有史以来最为复杂的工程项目创造了一组巨大的相互连接的模块，其以每小时27000公里的速度绕地球运行。
The most complex engineering project ever attempted has created an enormous set of interlinked modules that orbits the planet at more than 27,000 kilometres per hour.
该人造卫星每100分钟绕地球旋转一圈。
The satellite revolves around the earth once every hundred minutes.
这些卫星绕地球飞行。
我们的地理老师告诉我们月亮每28天绕地球一周。
Our geography teacher told us the moon circles the earth every 28 days.
它将在300千米的高度绕地球运行。
这足够绕地球两圈了。
月球绕地球运行。
这长度相当于绕地球三周的距离。
That's almost the equivalent of driving around the earth three times.
人平均一生走的路相当于绕地球三圈。
The average person walks the equivalent of three times around the earth in a lifetime.
绕地球的轨道太有价值而不能让这些发生。
The orbits around the Earth are too valuable to let this happen.
大多数都会绕地球而过。
它希望绕地球两次，但是撞上了地球。
It wants to go around the Earth twice, but it hits the Earth.
地球绕行太阳的速度大约是月球绕地球的30倍。
The speed of the Earth around the Sun is about 30 times the speed of the Moon around the Earth.
现在，月球的自转速度与绕地球公转速度是一样的。
Right now, the Moon's rotation rate, and the time it takes to orbit Earth are the same.
如果飞机有这样的速度，在一分钟多一点的时间内就能够绕地球一周。
At that velocity, an airplane could circle Earth in little more than a minute.
在完成媒体所谓的太空之“吻”后，两个飞行器现在一起绕地球转动。
After completing what state media referred to as a 'kiss' in space, both craft are now orbiting Earth together.
PAMELA卫星在绕地球轨道的低空处定期地穿越该区域。
In its low Earth orbit, PAMELA regularly plows through this region.
哈勃望远镜在绕地球轨道服役超过20年后继续获得极有价值的发现。
The Hubble Space Telescope continues to make valuable discoveries after more than twenty years in orbit around Earth.
“基本上，我们测量恒星周围的行星和月球绕地球的轨道，”基平说。
"Basically, we measure the orbits of the planet around the star and the moon around the planet," Kipping said.
这样做的目的是为了在地球自转的同时，使卫星能够绕地球同速转动。
The idea is that the craft circles ourplanet at the same speed as Earth’s rotation about its axis.
由于偏心率小，我们假定地球绕太阳的轨道和月球绕地球的轨道都是圆形。
Since the eccentricities are small, we can assume that the orbits of the Earth around the Sun and the Moon around the Earth are both circles.
人体里的血管总长度大约有62 000英里，拉直放到地上可以绕地球2.5圈。
There are 62, 000 miles of blood vessels in the human body – laid end to end they would circle the earth 2.5 times
这种情况每年平均发生一两次，不是每月都发生，因为月球绕地球公转的轨道稍稍有点斜。
This happens about once or twice a year, on the average, but not each month since the Moon's orbit around the Earth is slightly tilted.
(地球绕太阳公转一周约365天)，对比起来，月球约用29天左右绕地球一周。
(It takes about 365 days for the earth to make a complete revolution around the sun.) In contrast, the moon takes 29 days or so to make a complete cycle around the earth.
查德威克：实际上，那些最细小的尘土颗粒会被高高地吹到大气层当中，从而绕地球长途跋涉。
Chadwick: The finest portion will actually... can be lofted high enough into the atmosphere so that it will start to move long distances around the planet.
许多人相信太阳绕地球旋转，即古希腊学者Ptolemy于公元150年建立的地心说。
Many believed the sun revolved around the Earth, with ancient Greek scholar Ptolemy formalizing this "geocentric" model in 150.
很可能你看到的是一艘低轨宇宙飞船反射的太阳光，因为这些航天器每90分钟左右绕地球一圈。
What you are seeing, most likely, is a spacecraft in low Earth orbit reflecting back sunlight as it circles the Earth once every 90 minutes or so.
很可能你看到的是一艘低轨宇宙飞船反射的太阳光，因为这些航天器每90分钟左右绕地球一圈。
What you are seeing, most likely, is a spacecraft in low Earth orbit reflecting back sunlight as it circles the Earth once every 90 minutes or so.
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