celestial mechanicssəˈlestʃəlmɪˈkænɪks短语¹⁰⁶¹⁰⁰⁺⁵ 基本英英例句 n.天体力学;引力天文学 Noun: the branch of astronomy concerned with the application of Newton's laws of motion to the motions of heavenly bodies So, I want to tell you a bit about Kepler's second law of celestial mechanics. 因此我想告诉你们,一些关于开普勒第二定律的知识。163