| 释义 |
primum mobile/praiməm ˈməʊbili, pri:məm/n. 1 the central or most important source of motion or action (运动或行动的)主因；原动力 2 Astron. in the medieval version of the Ptolemaic system, an outer sphere supposed to move round the earth in 24 hours carrying the inner spheres with it 【天】原动天；第十层天(托勒密学说的最外层天体，带动所有天体转动) [medieval Latin, = first moving thing] |