常見例句Extragalactic nebula is invisible to the naked eye. 我們用肉眼是看不到河外星系的。"Extragalactic nebula" is a former name for "galaxy". “外星雲(yún)”是“星系”的曾用名。We shall hardly even touch the captivating problems of modern extragalactic astronomy. 甚至幾乎不涉及現(xiàn)代河外天文學(xué)中吸引人的課題。To study the star formation properties of galaxies is one of the major tasks of extragalactic astronomy. 星系的恒星形成性質(zhì)的研究是目前河外天躰物理學(xué)的熱門研究領(lǐng)域。Although the extragalactic space is a dangerous zone, you should also annihilate all the enemies on your journey. 雖然銀河系外的空間是一個(gè)危險(xiǎn)的地域, 但是,你也應(yīng)該在你的旅程上消滅所有的敵人。This Paper has Studied the observational parameters of 20 extragalactic H2O megamaser Sources. 研究了至今爲(wèi)止已發(fā)現(xiàn)的20個(gè)河外H2O超脈澤源的觀測(cè)蓡數(shù)。 返回 extragalactic