Astronomers have discovered a distant galaxy.天文学家们发现了一个遥远的星系。The Galaxy consists of 100 billion stars.银河系由1,000亿颗恒星组成。The spaceman flew through the galaxy at the speed of light.太空人以光速穿越银河系.We report Chandra observations ...
From this you can calculate the total mass in the Galaxy.由此你可以算出银河系的总质量。The Galaxy consists of 100 billion stars.银河系由1,000亿颗恒星组成。a galaxy of Hollywood stars好莱坞影星的荟萃...