常見例句雙語例句The Laws of Planetary Motion Kepler's First Law: The orbits of the planets are ellipses, with the Sun at one focus of the ellipse.行星沿橢圓軌道繞太陽運(yùn)行,太陽位于橢圓的一個(gè)焦點(diǎn)上。 對任一個(gè)行星說,它的徑矢在相等的時(shí)間內(nèi)掃過相等的面積。 返回 kepler's law of planetary motion