物理学家罗伯特·戈达德是火箭先驱。1930年代，在新墨西哥罗斯威尔他的车间前，他站在他的实验性A系列一个火箭旁。
Physicist Robert Goddard, rocketry pioneer, stands next to one of his experimental A-series rockets in front of his workshop in Roswell, New Mexico, in the 1930s.
1924年，当罗伯特·戈达德博士在马萨诸塞州伍斯特市克拉克大学的黑板上演示将来如何把地球人送上月球时，他被嘲笑成是痴人说梦
Mission impossible: Dr Robert Goddard was mocked for using a blackboard at Clark University in Worcester, Massachusetts, in 1924, to describe how man flying to the Moon would one day be possible
应用推荐