Saturn was to launch the 15 th flight, a Moon orbital mission.第15次飞行利用萨杜恩将飞船送人月球轨道.Explanation: What does the surface of Saturn's ice - spewing moon Enceladus look like?说明: 土卫二,这颗会喷出冰的土星卫星表面长什么样子?Planetary scientist...
Astronomers used to ask why only Saturn has rings.天文学家们过去一直感到奇怪,为什么只有土星有光环.Saturn was to launch the 15 th flight, a Moon orbital mission.第15次飞行利用萨杜恩将飞船送人月球轨道.The Saturn family of launch vehicles falls into three types or...
...a barbershop quartet.理发店四重唱Mr. Cremona's barbershop was an oasis of beauty and good will.老克的理发店恍如一块美丽亲善的绿洲.For nearly two hours,I waited my turn at the barbershop.我在理发店(排队)等了差不多两个小时。I have run into him in the bar...