You see how this epicycle theory could account for the seemingly backward motion of the planet.
你可以看到这个本轮理论是如何解释行星看起来像在做反向运动的。
Motion during the long exposure produced streaks in the starry background and the city lights on the darkened planet below.
在长时间曝光中的运动在星光熠熠的背景和下方变暗了的城市灯光上产生了条纹。
For when Shenton rides his motorbike, he says it is not gravity that pins him to the road, but the rapid upward motion of a disc-shaped planet.
比方说，他认为人骑摩托能紧贴在地面与重力并无关系，而是由于这个星球像个圆盘，在急速地上升。
On August 6th America’s space agency, NASA, announced that its Kepler planet-detector (named after the man who worked out the laws of planetary motion, as this article explains) is also behaving well.
8月6日，美国航天局和美国宇航局（NASA），宣称其开普勒号行星探测仪（根据发现了行星移动定律的开普勒命名，点此可见详细介绍）现在运行得十分良好。
In retrograde motion in your relationship sector Saturn has moved into opposition with the Sun, Mercury, Mars and Jupiter and over the weekend he'll add Venus, planet of love to that list.
土星在你关系宫的逆行，与太阳、水星、火星和木星都形成对冲位置，周末时对冲圈里还会加入爱之星金星。
Mars's consort, Venus, the planet of love and happiness, is in direct motion all year.
火星的配偶，金星，幸福和爱情的行星，将在一年中始终保持顺行。
There are two main research fields in the rotation dynamics of the planet Earth: rotation variation and the fluid motion effected by rotation.
行星地球自转动力学主要有两方面研究内容：自转变化和在自转条件下内部流体物质运动。
When Mercury goes into apparent retrograde motion, this planet weakens and all these areas suffer.
当水星逆行进入到明显，这个星球上的减弱，所有这些领域受到影响。
The very forces that were set in motion when the planet was created are the same forces that eventually will spell its demise.
星球创造之初的原动力正是其最终走向终结之因。
Pluto, the planet of our shadow sides, has been going backwards since April 2010 and since it is such a slow moving planet, it is going to take two days for it to reverse to forward motion.
掌管我们暗属性的冥王星自2010年四月开始逆行，因它移动缓慢，需要两天时间才能恢复顺行状态。
Pluto, the planet of our shadow sides, has been going backwards since April 2010 and since it is such a slow moving planet, it is going to take two days for it to reverse to forward motion.
掌管我们暗属性的冥王星自2010年四月开始逆行，因它移动缓慢，需要两天时间才能恢复顺行状态。
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