| 释义 |
詞目：Sideral、Sidereal 1908顏惠慶英華大辭典Sideral、Sidereala.1(Astron.) Pertaining to the stars, (天)星的; (Astrol.) measured by the seeming movements of the stars, (星)以星宿躔度計算的, 星躔的, 宿度的; A sidereal year, the period in which the earth makes one revolution in its orbit |