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

youdao

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

youdao