基本解釋[天文學]偕日落夕沒偕日降英漢例句雙語例句The heliacal rising or setting of a star indicates to within a few days the date in the annual day-cycle.星辰偕日陞降，說明了其在幾天內(nèi)年日循環(huán)的日期。heliacal setting更多例句詞組短語短語heliacal rising and setting 偕日陞降heliacal rising or setting 偕日陞落heliacal setting更多詞組專業(yè)釋義天文學偕日落夕沒偕日降