Early astronomers thought that our planet was the centre of the universe.早期的天文学家认为我们的星球是宇宙的中心。Space scientists and astronomers have taken another step forwards.航天科学家和天文学家又取得了进展。Astronomers used to ask why only Saturn has...
Astronomers usually assume that interstellar dust is closely confined to the galactic plane.天文学家通常认为,恒星际星尘都是紧靠着银河平面的.Early astronomers thought that our planet was the centre of the universe.早期的天文学家认为我们的星球是宇宙的中心。Astronome...
So you knew Erin before you met me?那么你在认识我之前就认识伊琳了?And especially because you're friends, like with Erin and I, we were like buddies.尤其是当你们是朋友, 就好像Erin和我一样, 我们是好朋友.Erin seems to be much more the hair maverick.埃琳在发式上...