sphaera recta

短语

发音

/ˈsfiːɹə ˈɹɛktə/

释义与例句

n.
  1. 1.

    An idealised conception of the celestial sphere in which the celestial equator is perpendicular to the local horizon and the Sun reaches the zenith at its highest point.

    仅单数 天文

词源

First attested in 1932; Latin: sphaera (“sphere”, “globe of the heavens”) + rēcta (feminine nominative singular of rēctus, “right”, “upright”) = “upright sphere”.

来源：wiktionary