If there is so much as one body moving at its free will, the laws of Kepler and of Newton are annulled, and every conception of the movement of the heavenly bodies is destroyed.
如果有一个天体自由运行，那么凯普勒和牛顿的定律就不再存在了，任何天体运行的观念也不再存在了。
Kepler went on to show that an elliptical orbit is sufficient to explain the movement of the other planets and to devise the laws of planetary motion that Newton built on.
接着开普勒证明了这个椭圆轨道也能很有效解释其他行星的运行轨迹。然后他提出了行星运动定律，牛顿定律就是以此为理论基础的。
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。
Kepler writes of what he felt when, after many years' work, he at last found the laws of the movements of the planets.
正如开普勒经过多年工作最终发现行星运行定律时所描述的。
The discovery of Kepler three laws and the periodic table of chemical elements as well as the establishment of the quantum theory of hydrogen atom are typical examples.
开普勒三大定律和元素周期表的发现和氢原子量子理论的建立无不如此。
The rate of sweeping out of area is a constant-this is one of three Kepler laws.
单位时间扫过的面积为常量，这就是开普勒三定律之一。
The rate of sweeping out of area is a constant-this is one of three Kepler laws.
单位时间扫过的面积为常量，这就是开普勒三定律之一。
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