登月飞行器挑战赛对美国国家航空航天局而言是一个好消息，因为它如今可以依靠大批潜在供应商和经验丰富的工程师群体制造出未来所需的任何登月飞行器。
The lunar lander challenge is good news for NASA, because it can now count on groups of potential suppliers and experienced engineers to build any future moon lander.
科学家和工程师们从20世纪60年代中叶就开始设计自动车辆了，但到了2004年五角大楼研究机构发起大挑战赛时才迎来了关键性的革新。
Scientists and engineers have been designing autonomous vehicles since the mid-1960s, but crucial innovation happened in 2004 when the Pentagon's research arm began its Grand Challenge.
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