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Author: WikiMatrix
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English[en]
Nixon also canceled the Air Force Manned Orbital Laboratory program in 1969, because unmanned spy satellites were a more cost-effective way to achieve the same reconnaissance objective.
Chinese[zh]
尼克松还于1969年取消空军的载人轨道实验室项目,因为使用间谍卫星不但可以达到同样的侦察效果,而且成本上也要低得多。