| 释义 |
aphelion/æpˈhi:liən, əˈfi:liən/n. (pl. aphelia /-liə/) the point in the orbit of a planet, comet, etc., at which it is furthest from the sun (opp. 反义 PERIHELION) (symbol 符 Q) 远日点(行星、慧星等轨道上与太阳相距最远的点) [Graecized from modern Latin aphelium, from Greek aph' hēliou ‘from the sun’] |