50 Years AgoLast week's first Saturn V flight (called Apollo 4) may have helped NASA to catch up on the lagging timetable for landing two Americans on the Moon by 1970. By combining in one flight the first operational tests of several important components,

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过去50和100年

过去50年来，上周的首次土星V航班（称为阿波罗4号）可能帮助NASA赶上了到1970年使两名美国人登上月球的落后时间表。通过一次飞行，对几个重要组成部分进行首次运行测试，