heliacal rising
常見(jiàn)例句
- The heliacal rising or setting of a star indicates to within a few days the date in the annual day-cycle.
星辰偕日升降，說(shuō)明了其在幾天內(nèi)年日循環(huán)的日期。 - One of the most famous of all ancient scientific observations was that of the heliacal rising of Sirius which warned the ancient Egyptians of the imminent inundation by the Nile.
古代最有名的一例科學(xué)觀測(cè)就是，古埃及人通過(guò)觀察偕日升降的天狼星，預(yù)測(cè)出即將來(lái)臨的尼羅河洪災(zāi)。 返回 heliacal rising